Fans are psyched for Justin Timberlake**'s return to music, but perhaps none more so than the singer's wife, Jessica Biel**. After her husband's performance at the Feb. 20 Brit Awards, the actress, 30, took to Twitter to gush about how well he did.

"My huz just killed it on the Brits," she tweeted shortly after he took the stage. "And the London fans are the tits!"

Timberlake, 32 -- fresh off his much-praised Grammys appearance on Feb. 10 -- treated the crowd at London's O2 Arena to the first-ever live version of his new song, "Mirrors," the official second single from his upcoming album, The 20/20 Experience. According to MTV, he started the performance solo, dressed to the nines in a Tom Ford suit and tie, and then built to a showstopping crescendo, complete with full band accompaniment and an audience clap-along.

Biel, who married the superstar in Italy in October 2012, has been a very vocal and visible supporter of her husband's musical comeback. At his post-Grammys concert at Hollywood's Palladium theater, she was "super excited for the show" and even danced around the VIP section to "SexyBack."

"You can tell she's completely proud of her husband," an onlooker told Us Weekly of the "beaming" star. "[She] was clapping like crazy."

This article originally appeared on Usmagazine.com: Jessica Biel Praises Husband Justin Timberlake: He "Killed It" at the Brit Awards