<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0407</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-03-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001780201</issuerCik>
        <issuerName>Lulu's Fashion Lounge Holdings, Inc.</issuerName>
        <issuerTradingSymbol>LVLU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001644264</rptOwnerCik>
            <rptOwnerName>Liaw Eric</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LULUS FASHION LOUNGE HOLDINGS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>195 HUMBOLDT AVENUE</rptOwnerStreet2>
            <rptOwnerCity>CHICO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95928</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-03-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9383</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>29964</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-03-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9383</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13863</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Institutional Venture Management XV, LLC</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4479</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Institutional Venture Management XVI, LLC</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3730160</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Institutional Venture Partners XV, L.P.</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>19843</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Institutional Venture Partners XV Executive Fund, L.P.</value>
                    <footnoteId id="F6"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3749997</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Institutional Venture Partners XVI, L.P.</value>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the transfer of shares received by the Reporting Person upon the settlement of restricted stock units (&quot;RSUs&quot;) that the Reporting Person received pursuant to the Issuer's non-employee director compensation policy. Pursuant to a series of Director Compensation Assignment Agreements, the Reporting Person has agreed to assign the beneficial interest in any equity awards granted to him for his service as director of the Issuer to Institutional Venture Management XV, LLC (&quot;IVM XV&quot;).</footnote>
        <footnote id="F2">Pursuant to a series of Director Compensation Assignment Agreements, these securities are held directly by the Reporting Person for the benefit of IVM XV and  Institutional Venture Management XVI, LLC (&quot;IVM XVI&quot;). The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">Shares are held directly by IVM XV.  The Reporting Person is a managing director of IVM XV and may be deemed to share voting and dispositive power over the shares held by IVM XV. The Reporting Person disclaims beneficial ownership of the shares held by IVM XV except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F4">Shares are held directly by IVM XVI. The Reporting Person is a managing director of IVM XVI and may be deemed to share voting and dispositive power over the shares held by IVM XVI. The Reporting Person disclaims beneficial ownership of the shares held by IVM XVI except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F5">Shares are held directly by Institutional Venture Partners XV, L.P. (&quot;IVP XV&quot;). IVM XV is the general partner of IVP XV.  The Reporting Person is a managing director of IVM XV and may be deemed to share voting and dispositive power over the shares held by IVP XV. The Reporting Person disclaims beneficial ownership of the shares held by IVP XV except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F6">Shares are held directly by Institutional Venture Partners XV Executive Fund, L.P. (&quot;IVP XV EF&quot;). IVM XV is the general partner of IVP XV EF. The Reporting Person is a managing director of IVM XV and may be deemed to share voting and dispositive power over the shares held by IVP XV EF. The Reporting Person disclaims beneficial ownership of the shares held by IVP XV EF except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F7">Shares are held directly by Institutional Venture Partners XVI, L.P. (&quot;IVP XVI&quot;). IVM XVI is the general partner of IVP XVI. The Reporting Person is a managing director of IVM XVI and may be deemed to share voting and dispositive power over the shares held by IVP XVI. The Reporting Person disclaims beneficial ownership of the shares held by IVP XVI except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Eric Liaw</signatureName>
        <signatureDate>2023-03-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
