Gaga, who filmed the segment Friday for airing later this month, alerted her Twitter followers that it was "a lil fun." She wore a gold metallic blouse with a bow, topping it off with the pink fedora that she wears on the cover of her new album, "Joanne."
As involved as Gaga is in her new-album promo, she took time out Friday evening to celebrate the birthday of "my best friend Sonja," who Gaga says is battling stage-four breast cancer "that has spread to many parts of her body including brain."
It's my best friend Sonja's bday I'm at her party. She has stage 4 breast cancer that has spread to many parts of her body including brain. pic.twitter.com/lesnOqnMeP
In spite of Sonja's dire prognosis, the two shared a colorful selfie (photobombed by a balloon) from the festivities, and Gaga asked her little monsters to log in to CancerBase.org to learn more about the scourge of cancer.