Kim, Kourtney, Khloe Kardashian Dazzle at Elton John's Oscars Viewing Party: Picture

It's a family affair! Kim, Kourtney, and Khloe Kardashian -- along with their mom, Kris Jenner -- dressed to the nines to attend Elton John's 22nd annual AIDS Foundation Oscars viewing party at West Hollywood Park on Sunday, March 2.

Each of the sisters showed off a unique sense of style at the Audi-sponsored event, which was also attended by celebs including Lady Gaga, Britney Spears, Christina Hendricks, Rumer Willis, and Neil Patrick Harris.

Kim, 33, flaunted her ample cleavage in a plunging tomato-red ball gown by designer Celia Kritharioti. She kept the rest of her look simple, accessorizing with dainty Lorraine Schwartz jewels and rocking a bold red lip.

Khloe, 29, also wore red -- but with a little added va-va-voom. Her crimson velvet Marc Bouwer number hugged her curves in all the right places. "I'm in love with my @marcbouwer dress!!!! Thank you [stylists] @robzangardi and @marielwashere for makign me feel like Jessica Rabbit tonight," she captioned a photo of herself on Instagram.

The eldest Kardashian sister, 34-year-old Kourtney, went for a more androgynous look. She opted for a chic Saint Laurent pantsuit, which she paired with pointy black pumps and a sparkly clutch.