Celebrities Step Out For the Elton John AIDS Foundation’s Oscar Viewing Party (PHOTOS)

Whether they were stepping out for the Oscars red carpet or checking out the hottest after parties, all of Hollywood and their mothers were out and about last night. No, really, Jared Leto, Leonardo DiCaprio, and Jonah Hill really did bring their moms to the Oscars!

So which party was the place to be last night? The 22nd Annual Elton John AIDS Foundation's Oscar Viewing Party had quite the guest list. Kim, Kourtney, and Khloe Kardashian got dressed in their Sunday best for the event, Vanessa Hudgens and her boyfriend Austin Butler got cute on the red carpet, Kristin Cavallari flaunted her baby bump, and there were so many more celeb sightings.

Click through the gallery to see who stepped out to honor the biggest night in movies. What do you think of the red carpet styles? Sound off in the comments!