Britney Spears and Iggy Azalea's new song, titled "Pretty Girls," has just been released and it's definitely worth the wait.

The long wait is over for fans of Britney Spears and Iggy Azalea's as their latest collaboration has been officially released on Monday morning, although the new song have been leaked a few days earlier. The "Black Widow" singer took to Twitter to encourage fans to wait until "Pretty Girls' was out on iTunes to listen to it.

""Hi guys its iggy here :-)... I happened to have noticed that pretty girls, my song with @britneyspears has leaked and is on some radio stations etc.," she posted.

"I'm really really happy to see so many people loving it but i also just want to clarify its not an "early" release its a leak and if you can we would really appreciate everyone holding out until monday to share links etc if possible (i know its hard, I'm excited too!)"

Iggy also confirmed that she was actually singing the chorus of "Pretty Girls" with Britney Spears.

"I guess you guys aren't used to hearing my singing voice. Saw some people missed that aspect, maybe when we perform it it will be more obvious hahaha," she posted.

When "Pretty Girls" was officially launched this morning, Iggy could not contain her excitement and posted about "fan girling" over Britney.

"To be honest im just over here acting like a total fan girl for britneys vocals on this song. cant. stop. listening. so classically Britney," she said.

The new track is expected to be part of Britney's next studio album. You can listen to "Pretty Girls" here.

Britney Spears and Iggy Azalea will perform their latest song, "Pretty Girls" at the 2015 Billboard Music Awards on May 17. According to CNN, the awards show will be in Las Vegas' MGM Grand Arena which will air on ABC at 8pm EST.