'Friends' Reunion: Lady Gaga Has the Ultimate Fangirl Moment, Singing 'Smelly Cat' With Lisa Kudrow

Lady Gaga Sings An Epic Rendition Of ‘Smelly Cat’ With Lisa Kudrow During ‘Friends’ Reunion

Lady Gaga rocks out to Smelly Cat with Lisa Kudrow on Friends: The Reunion special

Lady Gaga sizzles in a cheeky tie-dye bikini as she soaks up the California sunshine