Glee star Lea Michele threw up on the set of the hit show after choking on fake snow while she was singing her Tv mum Idina Menzel's Disney hit Let It Go.

Menzel gave Michele her personal Ok to cover the Frozen tune for Glee's final season premiere and the actress/singer admits the blessing and her nerves got the better of her when it came to singing it in front of the cameras.

She says, "At first I was sort of worried, because Idina sang it and Demi (Lovato) sang it... so many people have done it. But I got Idina's blessing, which was wonderful. We were sort of tweeting each other, and she knew it was happening.

"I felt a lot of pressure... I was super nervous. The day didn't start off so well. I was singing, there was (fake) snow falling, I looked up, trying to make it magical and beautiful, and ended up choking on the snow and vomiting on the ground. And they have it in slow-mo (slow-motion), on film."

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US Magazine: Lea Michele Vomited While Singing "Let It Go" on Glee - Us Weekly