Lady GaGa is set to appear in The Simpsons as a guest star! Yeardley Smith, best known for voicing the character Lisa Simpson, spoke to Broadway.com and revealed that GaGa is not only to appear in the show, but voice herself for her appearance.

This is extraordinary! I’m stunned that she has time in her schedule that she’s coming to our studio to record. She’s playing herself, and [The Simpsons writers] describe her as the happiest, most optimistic person in the world. She comes to Springfield to try to cheer up Lisa, but she can’t. I can’t wait to see what she wears!

Smith is set to record the episode alongside GaGa on August 22nd. The episode will air during the upcoming 23rd season of The Simpsons. GaGa previously appeared on the show in a guest spot as Elton John’s date at the Golden Globe awards – but did not voice the character.

We’re excited to see this episode of the iconic cartoon, are you monsters?!

Check it out! And be sure to follow Luna J on twitter.

iHeart radio are releasing promo videos ahead of their music festival in Las Vegas this September, and Lady GaGa’s video has been added to the line-up! Check out the video above, where GaGa talks about her music and how excited she is to take part in the festival.

Check out this behind the scenes footage of Lady GaGa’s promo video for this year’s Video Music Awards. She talks about the idea behind it, who the promo features and what they do on a regular night out together. Watch it above!

Lady GaGa was out and about in New York City yesterday. Check out these images of GaGa leaving her hotel, appearing at MTV first and making her way into the Roseland Ballroom for Beyoncé’s intimate concert in the venue.

MTV have released the full-length official promo video for Lady GaGa’s appearance at this year’s Video Music Awards. In it, we hear “Government Hooker” and “Heavy Metal Lover”. The video features many of Lady GaGa’s friends, including Lady Starlight, Semi Precious Weapons and Breedlove! Check it out above.

Lady GaGa today appeared on MTV First, making an extra special announcement about her performance at the 2011 MTV Video Music Awards. After announcing that she will open the show, she gave a special Q&A with MTV. Check it out above (worldwide video no longer available)!

Lady GaGa has announced that she is set to open this year’s MTV Video Music Awards! During a Lady GaGa special on MTV, which also saw the television debut of her new video “Yoü And I”, GaGa made the announcement, with some special little monsters holding up a banner with the announcement in Times Square! The Video Music Awards air August 28th on MTV.