New parents Justin Timberlake and Jessica Biel went on a date without baby Silas as they attended a friend's wedding in Gray Goose restaurant in Connecticut on Friday night.

A staff of the restaurant told People magazine that the "Sexy Back" singer and the "Total Recall" actress were "the sweetest people in the world-courteous, generous and a pleasure to serve."

The couple were "excited to be there, just having a great time with friends," the staff said, adding that they feasted on tuna tartare and sea scallops.

Jessica Biel also reportedly looked "amazing" and "really beautiful" after she gave birth to her and Justin Timberlake's first born, baby Silas, in April.

The bride was actually Jessica Biel's old friend back at Tufts University who married her long-time girlfriend. The Supreme Court has ruled that gay marriage is legal nationwide.

"Dana Panzer and Amy Wicker's wedding followed the US Supreme Court's landmark decision to legalize gay marriage across the nation on Friday - so Timberlake's impromptu concert made the already very happy occasion extra special," said Daily Mail.

Perhaps caught in the moment, or maybe at Jessica Biel's egging, Justin Timberlake sang "Señorita" at the wedding. Before belting out the lyrics, he reportedly told the crowd, "Imma start something, and all the fellas gonna look at the ladies, who just got married tonight. And all the ladies gonna look at the ladies, you know what I'm saying."

A month after Justin Timberlake and Jessica Biel welcomed baby Silas in April, the "Total Recall" actress was snapped looking svelte as she has obviously lost her post-baby weight.

A source described Jessica Biel to US Weekly, "She looked amazing. You would never know she just had a baby because she is slim and trim."

Justin Timberlake also "decided he wanted to put on a little concert for the two brides and he jumped on the stage. It was awesome and so special for the brides and all the guests who were so impressed!"