VIDEO AND PHOTOS: Fantasia Performs In Vegas Before Star-Studded Crowd

Interestingly, Fantasia’s married boyfriend Antwaun Cook was not at the event.

An insider told RadarOnline.com, “Fantasia was in great form and she really got a boost when Demi started to dance while she was performing it was a nice touch.

“The crowd was very supportive of her and they gave her a great reception which she seemed to really appreciate.

“She was totally professional and she sounded great. Nobody would have thought that she had been so unwell recently.

“But she seems to have put those troubles behind her now as she gets used to appearing in public again.”

Hollywood was out in force to show their support for Barrino at the Palms’ Rain Nightclub where they held an album release party for her new release Back To Me.

Demi’s husband Ashton Kutcher, actress Soleil Moon Frye, pro-wrestler Stacy Kiebler, actor Danny Masterton, swimmer Michael Phelps and actress Shannon Elizabeth were all on hand to support Fantasia.

After her performance,  Fantasia dined with Palms owner Gavin Maloof and his friends;  she looked stunning in a black and silver dress with knee high boots.

The singer then chatted with Olympic gold medalist Phelps before congratulating Executive Chef Barry S. Dakake’s on his menu and signing his famous Shakedown door.

Fantasia and the other stars stayed in Vegas to enjoy the Palm’s 2nd Annual Fantasy Football Superdraft Weekend.