Wed, November 16 2011, 10:42 EST

Demi Lovato was a bridesmaid at her Sonny With A Chance co-star Tiffany Thornton's wedding this past Saturday. Disney actress Thornton, 25, exchanged vows with court officer Christopher Carney.
Lovato didn’t go solo to her good friends’ wedding. Instead, she took That 70s Show actor Wilmer Valderrama, who has been linked to Lindsay Lohan, Mandy Moore and Ashley Simpson . Just a few weeks ago, Lovato, 19, and Valderrama, 31, were spotted getting cozy earlier at a club in L.A. Rumors quickly spread that the celebrities, who dated back in May 2010, were back on and better than ever.
Lovato and the seven other bridesmaids wore different Max Azira purple mini dresses. The bride wore a Max Azira design—a white strapless gown with a long ruffled skirt. Lovato looked beautiful in a one shouldered purple dress, while Valderrama sported a grey suit and black shirt. As for shoes, Lovato wore shiny black heals, while Valderrama wore purple and white sneakers.
Photographers snapped Lovato holding her purple bouquet and posing with friends. The actress/singer who had a difficult year after entering treatment for eating disorders and bipolar disorder looked happy and healthy.
Lovato had such a great time, she even tweeted about the wedding. “Had such an amazing day.... Congrats to the new Mr. And Mrs. Chris Carney. Ps.... Guess who caught the bouquet...... ME!!!!!” she wrote.
Lovato’s rep did not comment on rumors surrounding Lovato and Valderrama.
Do you think Lovato and Valderrama will last? Or is this just another Hollywood relationship doomed to fail?
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