While we've seen a glimpse of her role in the trailer, she gave us a full preview of one of the songs she sings in the film while in Vegas this week. That's right--as Gay Times pointed out, she performed ABBA's 'Fernando' during an appearance at CinemaCon, which is an annual event in which studios highlight their upcoming releases.
As you can imagine, she was flawless. It's Cher, after all. Watch the performance below.
Mamma Mia! Here We Go Again hits theaters in July.