Kat Graham and Sherri Shepherd were among the stars who attended the New York premiere of Tyler Perry's film "Duplicity" ...

Kat Graham and Sherri Shepherd were among the stars who attended the New York premiere of Tyler Perry's film "Duplicity" ...

Katy Perry and Rebecca Black took part in another cheeky skit together in honor of the latter joining the pop star on her new The Lifetimes Tour.

Katy Perry surprised the audience at her Los Angeles concert by bringing Rebecca Black on the stage for a special performance of Last Friday Night (T.G.I.F.). The unexpected duet was very nostalgic, ...

And while on stage Katy clearly got very into her performance as she lifted her tight white vest down to reveal her silver underwear. She completed her outfit ... rendition of Perry's 2011 hit ...

However, there were plenty of Perry defenders, too, with fans noting that they were missing her presence behind the judges’ table. The “Roar” singer previously served as a judge for seven ...

Katy Perry has teamed up with Rebecca Black for Perry's Lifetimes tour. Black, who appeared in Perry's 2011 video for Last Friday Night (TGIF), was at the Los Angeles stop on her own Salvation ...

Katy Perry has reunited with Rebecca Black during a recent live show, and invited the singer to join her for the ‘Lifetimes’ tour. READ MORE: Rebecca Black on 14 years of ‘Friday’ and find ...

Katy Perry announced in February ... who loved the pop star’s over-the-top themed outfits and how she always encouraged contestants to never give up. Perry joined ABC's revival of American ...

Katy Perry on the Grande Finale of American Idol Season 22.

Black announced Sunday, March 9 on her Instagram page that she’s been chosen to open 20 arena shows on Katy Perry‘s The Lifetimes Tour which include stops at Honda Center in Anaheim on July 13 ...