Watch Justin Timberlake Perform at the Wedding of Jessica Biel's Friend

Justin Timberlake took the mic on Saturday when he gave a surprise performance at the wedding of Jessica Biel's college roommate, Dana Panzer. Dana tied the knot with Amy Wicker at St. Paul's on the Green in Norwalk, CT, and from the looks of it, both the couple and their guests had a blast. Instagram videos show JT performing "Señorita" while guests hit the dance floor and the two brides sing along. According to Us Weekly, Justin let loose, at one point dancing in the middle of the wedding circle. Keep reading for sweet videos from the reception, then check out Justin Timberlake's sweet Father's Day photo with baby Silas plus all the precious pictures of JT and Jessica's adorable son.

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"nbd just that time @justintimberlake impromptu performed at @wickywickerton and @dmpanzer 's wedding and then basically had a dance off w amy #amylovesdana"

"Epic."

Instagram | littlestwick13

"wedding in our backyard.. Justin Timberlake at the wedding.. Justin Timberlake was at my house? #amylovesdana #inebriated"