Monday 26th September 2011 by | Photos by Splash News / WENN.com

Tags: Lady Gaga

September 24-25 2011 – This year's IHeartRadio festival attracted some of the biggest names in music and film, including Lady Gaga and Twilight's Ashley Greene.

Coldplay, Black Eyed Peas, Jay-Z Jane's Addiction, Nicki Minaj and Justin Timberlake also attended the event at the MGM Grand in Las Vegas.

Lady Gaga made a rare live performance at the two-day festival, and was joined on stage by Sting during a set that included a host of songs from her recent album 'Born This Way'.

You can see pictures from IHeartRadio on Gigwise below. What did you think of the line-up? Leave your thoughts in the comment form below.