1. Lily Collins
Lily Collins stunned in a violet beaded Couture gown by celeb-favorite Zuhair Murad.
2. Halle Berry
The always glamorous Halle Berry shimmered from head to toe with the help of Adeler Black Onyx and Diamond Earrings and a Le Vian Gladiator Diamond Ring.
3. Zooey Deschanel
Zooey appeared a little blue as she arrived at the bash, but her Dana Rebecca Designs Anna Beth Pink Quartz Earrings and Lindsey Elizabeth ring did the dazzling for her.
4. Rosie Huntington-Whiteley
Model and actress Rosie Huntington-Whiteley was all ruffles in a Valentino gown which she paired with a diamond ring by Graziela.
5. Kate Beckinsale
Kate looked flirty and fun in this strapless, tea-length dress. We're loving her voluminous, high pony tail. The whole look is perfect for dancing the night away.
6. Steven Tyler
It just isn't a party without a resident rock star in the mix. We have a feeling Steven brings the party with him wherever he goes.
7. Natalie Portman and Benjamin Millepied
Natalie and hubby Benjamin Millepied looked more in love than ever as they entered the star-studded soiree.
8. Reese Witherspoon, Naomi Watts and Isla Fisher
Someone didn't pass Naomi Watts the memo that blue was the color trending this year on Oscar's red carpet. Regardless, these three ladies were total knockouts.
9. Jennifer Aniston and Justin Theroux
It's simply couples cuteness overload with these two! Still looking supremely smitten with one another, Jennifer Aniston and fiance Justin Theroux were all aglow inside the party.
10. Ashley Olsen and Catherine Zeta-Jones
We live for parties like this because you'll notice random celebs engaged in serious conversation. Who knew Ashley Olsen and Catherine Zeta-Jones had anything to talk about?
11. Samantha Barks and Daniel Radcliffe
Les Miserable star Samantha Barks poses with a very dapper Daniel Radcliffe.
12. Bono, Leslie Mann, Eve Hewson and Judd Apatow
Bono and his daughter, actress Eve Hewson, get chummy with the hilarious Leslie Mann and her hubby, director/producer Judd Apatow.
13. Vanessa Hudgens and Selena Gomez
The 'Spring Breakers' co-stars looked utterly glam arriving to the Oscar party, a far cry from the bikinis they don for their upcoming flick with James Franco.
14. Diane Kruger, Joshua Jackson, Josh Hartnett and Tamsin Egerton
We want to hang out with this group! Looking as though it's celebrity double date night, the two couples partied the night away.
15. Jennifer Lawrence
With her Oscar statuette still in hand, Jennifer Lawrence makes a stop at the Vanity Fair party.