With skin, snakes and smooches in her past MTV repertoire, there's no telling what's in store Sunday when Britney Spears opens this year's Video Music Awards.

The 25-year-old tabloid magnet will perform "Gimme More," the first single from her upcoming album, MTV announced Thursday.

Spears is a VMAs veteran: She covered the Rolling Stones' "Satisfaction" in 2000, stripping down to a nude-colored bikini top and matching pants; a year later, she performed "I'm A Slave 4 U" with a 7-foot albino python around her neck. In 2003, she and Madonna had the watercooler moment of the year with an open-mouth kiss - in the opening act.

Sunday's show in Las Vegas will mark Spears' latest - and biggest - step toward a career comeback after a period of public misbehavior, short-lived marriages, ultra-short hair-don'ts and other misadventures.

Her long-awaited new album is due for release Nov. 13 on Jive Records.