Lester Cohen / WireImage.com 1 / 12
Lester Cohen / WireImage.com 1 / 12

Tuesday evening wasn't especially full of glee for Amber Riley.

At an Academy screening of "Glee" at the Leonard H. Goldenson Theatre in Hollywood, Calif., the singer and actress, 26, fainted and collapsed on the red carpet, multiples outlets reported.

PHOTOS: Go behind the scenes of Glee

The star, who plays Mercedes on the musical show, assured fans after the incident that all is well. "Hey guys, I'm okay :)," she tweeted. "I got a little dizzy from all the photog flashes! You'd think I’s be used to it by now, still a red carpet amateur I guess. Gonna get checked out but I feel fine. Thank you for all the concern and well wishes."

PHOTOS: Real-life yearbook pix of the cast

Riley added that she was grateful to red carpet photographers for not capturing her collapse.

"I'd also like to thank the photographers for being so professional and not taking photos of me on the ground. I truly truly appreciate it. Could have been super embarrassing."

PHOTOS: Love lives of Glee's stars

Her "Glee" castmates Lea Michele, Matthew Morrison, Heather Morris, Cory Monteith, Darren Criss, Chris Colfer and Jane Lynch also attended Tuesday's event, which featured a Q&A session in addition to the screening.

This article originally appeared on Usmagazine.com: Glee's Amber Riley Faints, Collapses on Red Carpet