What to Wear to Fake Prom's Retrotastic Rager This Valentine's Day

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It's the penultimate day to get your Valentine's Day, Singles Awareness Day, or just plain Saturday plans on lock. Among the many romantic haps going down this weekend is the throwback dance party Fake Prom, which takes place on V-Day at DTLA's Unique Space.

To prepare for the Back to the Future-themed rager, we asked Prohibition fashion-obsessed treasure trove Paper Moon Vintage in Los Feiz, contemporary designer shop A.sweeT Boutique in Beverly Hills, and pin-up girl style haven Unique Vintage in Burbank to show us their best looks for Saturday's stylish soiree.

Photo: Paper Moon Vintage; hair by Melissa Firestone

Where: Paper Moon Vintage, 4516 Hollywood Blvd., Los Feliz; (323) 666-6009
What: Vintage '50s black velvet halter top and full satin skirt; available in shop
Why: Stylish boutique owner and pro party photog Nicole Loretta (that's her above!) chose this decidedly different Valentine's Day outfit for monochrome-obsessed dressers. "Stand out and be unique in something other than red and pink! Accessorize whatever dress you choose with some romantic notions, like a rhinestoned brooch of an arrow to the heart, playful red accents, and flowers in your hair," she says.

What: Vintage '50s taffetta gown; available in shop
Why: "This authentic '50s number featuring a large bow at the strap makes you look like a gift to yourself," she says. Ladies who wear a size 5, this one is for you.

Photos: Unique Vintage

Where: Unique Vintage, 2013 W Magnolia Blvd., Burbank; (800) 721-6589
What: Unique Vintage Garden State Mesh Cocktail Dress in Mint Green, $128
Why: This Sandra Dee-inspired mint dress brings a "softer, feminine, almost innocent" touch, says store manager Sheena Walker, who styled and modeled the look.

What: Queen of Heartz Brenda Swing Dress in Black, $122
Why: "This look was inspired by the Drapes (gotta love some Cry-Baby) in bad-girl black," says Walker, who paired a classic off-the-shoulder swing dress with bright red accessories. "Think Bettie Page goes to prom!"

Photos: A Sweet Boutique

Where: A Sweet Boutique, 253 S Beverly Drive, Beverly Hills; (310) 860-9265
What: Torn by Ronny Kobo Edna dot crop top ($248) and Renata polka dot skirt ($228), Venessa Arizaga Chill Pill bracelet, $100; A.sweeT exclusive POP Candy clutch, $82
Why: Bringing a modern touch to the retro dress-up bash is designer shop A.sweeT boutique. Owner Andrea Trujillo chose this '50s-inspired two-piece set from Torn by Ronny Kobo for model Amanda Chanen. "It's sophisticated, playful, and chic," says Trujillo, who kept the polka dot combo simple with a Venessa Arizaga bracelet and black open-toed heels.

What: Torn by Ronny Kobo Lana crop top, $246; Shakuhachi Mock Croc skater skirt, $108 (orig. $216); American Retro Gloria bomber sequin jacket, $302 (orig. $605)
Why: Trujillo looked to the classic '50s-by-way-of-the-'70s flick Grease for this T-Bird-inspired outfit. "The ruffled crop top and the jacket's sequins and glitter keep it updated for a modern look," she says, "perfect for going edgy and playful to the prom."