Lady Gaga performed at a tribute show with Yoko Ono for the late John Lennon, but all anyone could talk about was the sheer outfit Lady Gaga wore on stage. 

The dark one-piece seemed to conceal all, but with the right light - and once she turned around - it was very apparent it was meant to show off almost everything!

After the concert Gaga took to her Twitter.com page to tell fans about the show, posting a picture of herself posing with Lennon's son Sean, writing: "I got to sit in as a guest musician tonight, what a legendary band + mother, Yoko." 

Lennon's widow organized three nights of shows in Los Angeles over the weekend to mark what would have been the musician's 70th birthday on October 9th. 

Lady Gaga Photos