Cher joins 'Mamma Mia 2'

Singer-actor Cher has joined the cast of "Mamma Mia! Here We Go Again".

The details of Cher's role in the 2008 hit film's follow-up are being kept under the wraps.

This will be the "Believe" hitmaker's first on-screen film role since 2010's "Burlesque".

Over the weekend, Cher teased her appearance in the Ol Parker-directed film on Twitter.

In a series of tweets, she wrote, "FERNANDO.

"THE ROAR OF GUNS & CANNONS ALMOST MADE ME CRY...

"Just went through two dance numbers, Everyone's great."

The film is set to release on July 20 next year.