Behind-The Scenes Feud! Sandra Bullock ‘Annoyed’ At Rihanna After ‘Oceans 8’ Premiere

Sandra Bullock is not playing around when it comes to show business.

This June 5 at the Premiere of Oceans 8, the brunette beauty got ticked off at costar Rihanna—because she was 30 minutes late!

“Sandra is all business,” an insider told InTouch. “The screening was supposed to start at 7, and they didn’t get inside for it until 7:40.”

While Bullock, 53, Cate Blanchett, 49, Anne Hathaway, 35, Mindy Kaling, 38, Sarah Paulson, 43, Awkwafina, 29, Helena Bonham Carter, 52, and James Corden, 39, were all present, the talented cast had to wait on the edgy singer to start the film!

The actress was enraged when Rihanna, 30, essentially forced the A-listers guests to adjust to her schedule.

“She was annoyed that Rihanna was not on time,” added the source close to Bullock.

As RadarOnline.com readers know, models Gigi Hadid, 23, Lily Aldridge, 32, and Adriana Lima, 36, also arrived at the premiere to support Bullock and the rest of the powerful female cast.

Can you blame Sandra bullock for being ticked off at Rihanna? Sound off below.