Selena Gomez's black slip dress and derby shoes from Julia Michaels' 90s prom-themed Birthday party

Selena Gomez Instagrammed THIS photo and Julia Michael's Instagrammed THIS photo from her 90s prom-themed Birthday party.

Selena's dress is the Kiki De Montparnasse Perfect Lounge Slip Dress. Buy it HERE and HERE.

Her shoes are the Louis Vuitton Beaubourg Platform Derby Shoes. Buy them HERE.

Get the look for less here:

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