Lady Gaga and Bruno Mars have teamed up for a new song and video ... A day later, Mars posted a photo of himself donning a Gaga graphic tee. The announcement comes amid a busy week for Mars.

Lady Gaga and Bruno Mars dropped their new single "Die with a Smile" on Thursday and the global pop superstars addressed how the California collaboration came to be in a press release.

Lady Gaga teamed up with Bruno Mars for their “Die With a Smile ... The “That’s What I Like” singer pointed to Gaga’s moniker on the tee, which also featured a skull with pink hair ...

Lady Gaga and Bruno Mars shared how their unexpected collaboration, “Die With a Smile,” came together as they released the song and its music video Friday. “Bruno and I have a lot of mutual ...

Lady Gaga and Bruno Mars are grinning all the way to the grave in the music video for their new surprise collaboration, "Die With a Smile," which Entertainment Weekly has learned is a special one ...

So croons Bruno Mars — who seems as if he had literally been on Mars — at the opening of “Die with a Smile,” the power-ballad belt-off with Lady Gaga that we never knew we needed.

Bruno Mars teamed with Red Hot Chili Peppers for a high-energy %27Give It Away%27 He finished with a flourish of fireworks and %27Just the Way You Are%27 The performance spurred 2.2 million tweets ...