Avril Lavigne and Robert Downey Jr. at Jay Leno,Robert is doing the Gagnam Style

Avril Lavigne rocks a little black dress while performing on The Tonight Show with Jay Leno on Friday (April 26) in Burbank, Calif.
“We are performing on @jayleno tonight! 11:35/10:35c… Here’s to Never Growing Up!” the 28-year-old singer tweeted.
Avril was joined on the show by Robert Downey Jr, who promoted his new flick Iron Man 3, hitting theaters on Friday, May 3!

-I.

source:justjared