The sexy dresses we spotted on the Oscars red carpet  have nothing on the styles that strutted into the afterparties ! We saw open backs, daring cuts at the side, and plenty of deep, deep v-necks. Modest types might not be pleased, but we ask you: if you can't let things sizzle on Oscars night, when can you?
Reese Witherspoon at the 2014 Vanity Fair Oscars Party
America's sweetheart, who? Reese Witherspoon  vamped it up more than usual in a creation that used two thick bands of fabric to form a top, covering the necessities but leaving lots of skin exposed. We like daring Reese!
Selena Gomez at the 2014 Vanity Fair Oscars Party
Selena Gomez  opted for gold in an Emilio Pucci  embroidered tulle halter-neck dress from the Fall 2014 collection.
Karlie Kloss at the 2014 Vanity Fair Oscars Party
A deep laced neckline wasn't enough to distract us from the back of Karlie Kloss's slinky black dress. Additional lacing plus slivered cutouts made for a sinfully sexy look.
Kristen Bell at the 2014 Vanity Fair Oscars Party
Kristen Bell  might've said her Oscars gown was inspired by Frozen, the film she was there to support, but it looks like the fiery red Spring 2014 Zuhair Murad gown she chose for the afterparty was definitely for the grown-ups! She finished it with custom dyed satin Brian Atwood  platforms.
Rosie Huntington-Whiteley at the 2014 Vanity Fair Oscars Party
A sheer back extended to the side and the front of Rosie Huntington-Whiteley's baby blue dress, making for one very sexy side view. She set off the pearl detailing on the front of the gown with an Aldo clutch, also embellished with the tiny white beads.
Doutzen Kroes at the 2014 Vanity Fair Oscars Party
Pregnant Doutzen Kroes looked to be one very hot mama in a tea-length black dress that was far from demure — check out that neckline!
Liberty Ross at the 2014 Vanity Fair Oscars Party
After her husband dominated the news last year , Liberty Ross has firmly claimed a spot on our radar based on her style alone. The orange-red hue of this dress was siren ready, while the strappy top had a sexy bondage vibe.
Sofia Vergara at the 2014 Vanity Fair Oscars Party
Always count on Sofia Vergara for a bombshell look. The actress picked snowy white with a crisscross halter neckline that showed a spot of skin. Silver banding above her hips only served to accentuate her curves more.
Gabrielle Union at the 2014 Vanity Fair Oscars Party
The plunging neckline of Gabrielle Union 's all-black look grabbed our attention, but at closer inspection, we noticed that her long skirt was mostly sheer. Another sexy surprise!
Miranda Kerr at the 2014 Vanity Fair Oscars Party
Miranda Kerr  likely got herself mistaken for an Oscar statuette in this long and lean Kaufman Franco  metallic column gown. And while the model would look gorgeous even in a turtleneck, the neckline on this one kept the heat level high. Her sparkle came courtesy of a Jacob & Co. ring and bracelet.
Chanel Iman at the 2014 Vanity Fair Oscars Party
It was couture for Chanel Iman — Zuhair Murad Fall 2013 to be specific. The model stunned in bright blue that dipped down nearly to her navel and showed off cutouts at the side and sheer panels from the hip to the floor.
Chrissy Teigen at the 2014 Vanity Fair Oscars Party
The swimsuit stunner swapped out the pretty ballgown she wore to the actual awards for something a bit more sultry; specifically, a Naeem Khan  dress from the designer's Fall 2014 collection that featured a plunging sweetheart neckline and high leg slit.
Diane Kruger at the 2014 Vanity Fair Oscars Party
Don't let the high neckline fool you — a long lace overlay showed off a supermini, and the perfectly layered top showed off some skin on her stomach and chest, too.
Kate Beckinsale at the 2014 Vanity Fair Oscars Party
The glamour factor of Kate Beckinsale 's afterparty look came by way of the rich gold of her dress (from Elie Saab 's archives). But the sex appeal was all about a side cutout, a slit that rose to above midthigh, and strappy Brian Atwood  sandals.
Regina Hall at the 2014 Vanity Fair Oscars Party
Coverage doesn't have to mean you're covered up. Regina Hall proved our point perfectly in a long, sheer black Alon Livné dress that showed her briefs and plenty of skin on the arms.
Karolina Kurkova at the 2014 Annual Elton John AIDS Foundation Academy Awards Viewing Party
Don't let the long sleeves and floor-length hem of Karolina Kurkova's white lace dress fool you: the see-through nature of her skirt showed off an ultrashort mini.
Heidi Klum at the 2014 Annual Elton John AIDS Foundation Academy Awards Viewing Party
Heidi Klum 's strapless black dress fit her like a glove, making for a very sexy appearance at Elton John's big party. For her extras, she picked Jimmy Choo  sandals and black diamonds from Lorraine Schwartz.
Kim Kardashian at the 2014 Annual Elton John AIDS Foundation Academy Awards Viewing Party
Kim Kardashian  might've picked a princess-like ballgown for the evening, but we're not envisioning Kate Middleton in this pick anytime soon. The daring neckline showed off a bit more than we think the queen would approve of.
Jessica White at the 2014 Annual Elton John AIDS Foundation Academy Awards Viewing Party
Even with its elaborate construction, Jessica White's dress still had plenty of obvious sex appeal. A long train and floor-sweeping sleeves didn't distract us from the open back and supershort skirt.
Kelly Rowland at the 2014 Annual Elton John AIDS Foundation Academy Awards Viewing Party
The back of Kelly Rowland's slinky dress was nearly completely open, save for a single skinny strap, making for a perfect mix of minimalism and pure sex appeal.