Miley Cyrus and Rihanna dare to bare it all at amfAR gala

By JENNY DEPPER

Miley Cyrus and Rihanna figured out one way to keep all eyes on them ... cleavage-baring dresses.

The two popstars set the red carpet afire at the amfAR Inspiration Gala in Hollywood on Wednesday night in two very daring dresses.

The "Bangerz" singer, 21, turned heads in a bondage-style Tom Ford dress, which left little to the imagination with leather straps covering her décolletage. While the top was shocking, the rest of the gown was relatively demure. Needless to say, Miley stood out next to her mother and date, Tish, who was clad in a gorgeous gold gown.

Not to be outdone, Rihanna also opted for a Tom Ford concoction with some eye-catching details. The 26-year-old singer wore a white, Grecian-inspired gown featuring a thigh-high slit and a sheer bodice with purple sequins strategically covering her lady parts. She polished off the look with sleek tresses and an orange lip.

While Ri-Ri and Miley certainly stole the show, they weren't the only A-list women who put their skin on display. Victoria's Secret stunner Alessandra Ambrosio, "2 Broke Girls" star Beth Behrs, singer Natasha Bedingfield and actress Michelle Rodriguez were also among the sexy but scantily clad women of the evening.

The event, which celebrates men's fashion and style while raising funds for amfAR's AIDS research programs, drew out plenty of celebs. Justin Timberlake, Gwyneth Paltrow, Rose McGowan, Sharon Stone, Lea Michele, Molly Sims, January Jones and more were in attendance.