Liza Minnelli to appear in 'Ugly Betty'?

Liza Minnelli has reportedly joined the cast of Ugly Betty.

Fox411 claims that the Broadway star will appear in multiple episodes of the ABC drama later this season. Sources have said that she will play Lena Korvinka, a drama teacher at Justin's school.

"There were massive rumours last year, then again in early January, that Liza was being courted for the show, but Liza hadn't originally planned to do the show," an insider explained. "Ugly Betty producers presented her with a great offer and a hilarious story and they kept coming back to her.

"She's going to be playing an outrageous drama teacher and it is going to be fun! Liza is excited to be playing another off-the-wall character like Lucille 2 on Arrested Development."

However, ABC did not return requests for comment and Minnelli's representative denied any knowledge of the role.

The spokesperson said: "Liza is a fan of Ugly Betty but I am not aware of any current plans for her to join the cast."

Mad Men star Rich Sommer recently signed up to appear on the show.