Ariana Grande -- Do Something Awards 2011

Ariana Grande sparkles in a pink Versace dress as she arrives at the 2011 Do Something Awards held at the Hollywood Palladium on Sunday evening (August 14) in Hollywood.

The 18-year-old Victorious starlet tweeted after the show, “Just got home from the Do Something awards… Wish I could have stayed but I have a big day in the studio tomorrow & need 2 rest my voice!”

Ariana, who just signed a record deal with Universal Republic, also stepped out at the Victorious soundtrack signing at Walmart in Duarte, Calif., on Saturday afternoon (August 13).

10+ pics inside…