Jennifer Lopez and Marc Anthony Both Taking Stage at AMAs

By Mike Fleeman

11/17/2011 at 04:00 PM EST

Will the AMAs this year stand for Awkward Moment Awards?

Marc Anthony and Jennifer Lopez both will be performing at this weekend's American Music Awards – and Lopez's new beau Casper Smart also may be on stage as one of her dancers.

The pair, who split last summer after seven years of marriage, will take the stage separately at Los Angele's Nokia Theatre L.A. Live.

PHOTOS: J.Lo & Marc: 10 Defining Moments

Lopez will be doing a three-song medley of her hits "Until It Beats No More," "Papi" and "On the Floor" and a duet with Will.i.am, who's debuting his single. "Anthony will join Pitbull and Lil Jon for Pitbull's hit "Rain Over Me."

But don't expect any big trouble. The exes are on friendly enough terms to reunite just last week in Puerto Rico to work on their upcoming talent show Q'Viva! The Chosen.

The American Music Awards air Sunday at 8 p.m. ET/7 CT on ABC.