By: Andrew Silverstein

If you didn't have an excuse to take a Vegas vacation, or, dare we say, road trip, you might now.  The iHeartRadio Music Festival presented by Clear Channel is gearing up to be one of the biggest live music events in radio history highlighting the best in chart-topping artists of today and a few musical legends to round it out.

Hosted by Ryan Seacrest, the iHeartRadio Music Festival will take place on September 24 and 25 at the MGM Grand.  The fest will coincide with Clear Channel's release of the newly revamped, completely customizable IHeartRadio app which will offer a function similar to that of  Pandora's where users can create customized playlists and stations on their mobile devices or computers.

Lined up to headline the festival are two of today's biggest musical acts, Coldplay and Lady GaGa.  If you were at the St. Pete Times Forum when GaGa stopped by a few months ago, you probably know how awesome a show like this can be for a fan.

In addition to GaGa, and Brit-rockers Coldplay, other acts including Bruno Mars, the Black Eyed Peas, Sting, Jennifer Lopez, Nicki Minaj, Alicia Keys, Usher, Kenny Chesney, and more are scheduled to perform.  Talk about a little something for everyone.

Tickets will be on sale to the general public beginning this Saturday, July 16.  Single day tickets run anywhere from $45 to $265.50 and will get you all-day access to the iHeartRadio music fest, the biggest live music event in radio history.

The full lineup is as follows...

FRIDAY, SEPTEMBER 23, 2011:
Coldplay
Alicia Keys
The Black Eyed Peas
John Mayer
Carrie Underwood
Bruno Mars
Jane's Addiction

SATURDAY, SEPTEMBER 24, 2011:
Lady Gaga
Jennifer Lopez
Steven Tyler
Kenny Chesney
Nicki Minaj
Rascal Flatts
Kelly Clarkson
David Guetta
Sublime with Rome
Special guest performances by Sting and Usher

Read more about the fest at the iHeartRadio website here.