We can only imagine what Lady Gaga will wear to the 2009 MTV Video Music Awards this Sunday. So, until Gaga sets foot on the red carpet and onstage in one of her typically eye-popping getups, it's time to look back on some of the greatest outfits other nominees and performers wore at VMAs in the past few years.

Pink dressed in all black for the 2006 VMAs. Her chic, high-waisted pinstripe pants paired with a see-through blouse were girly enough but still edgy thanks to heavy eye makeup and a nose ring.

Beyoncé looked like a goddess in 2007, showing off her curves in a gold gown with a thigh-high slit and a neckline that revealed just enough of her décolletage. She finished off the glamorous look with a high ponytail, big earrings and lots of bangles.

Hot pink never looked hotter or hugged anyone's body better than when Rihanna stepped onto the red carpet in 2007. With just a few blond streaks in her hair and her barely there makeup, RiRi made quite a fashion statement.

Of course there are also the guys who have definitely left their marks on the red carpet. In 2007, the two guys that stood out were Kanye West and T.I. Tip arrived at the Las Vegas show in a silver suit that Dean Martin would have loved. Kanye opted for a black tuxedo jacket and paired it with casual black pants and high-top black sneakers.

Katy Perry, who is nominated this year for her video for "Hot N Cold," showed the world her signature vintage look in 2008 with beige satin hot pants, a star-patterned halter top, feather wristband and hot-pink shoes. She capped off the throwback look with pin curls and red lipstick.

That same year, Taylor Swift made her VMA debut. The country superstar, who is nominated for Best Female Video in 2009 for "You Belong With Me," shined bright in a sequined gold dress and her curly blond locks. The look definitely proved that she belonged as the night's fashion correspondent.

Britney Spears re-emerged at the Princess of Pop in 2008 and looked like a trophy herself in her glittery metallic dress with flapper details on the hem. Miley Cyrus decided to go Roman when she went to the VMAs in 2008. In her slate-colored, beaded sheath dress, Miley kept it young and fresh by pairing it with platform shoes, a belt and just a tiny necklace.

Thanks to shades of nude, pink, silver and white the Pussycat Dolls glammed up the 2008 red carpet. They (thankfully) weren't wearing matching outfits, but each girl picked a dress that seemed to best fit their personality.

Watch the 2009 MTV Video Music Awards Preshow this Sunday, September 13, at 8 p.m. ET, followed by the big event, live at 9 p.m. Check out our interactive map of New York to see how the city is celebrating the VMAs all week long, and stay tuned for party coverage, concert reports, behind-the-scenes updates and more.