Anne Cox tied the knot with her longtime partner Robin Twist over the weekend and the bride's son Harry Styles served as best man to the man who helped raise him into the pop star he is today.

Styles' mother's wedding was surprisingly tame considering the One Direction singer was part of the wedding party, but all reportedly had a great time. It seemed like the reports of Harry having ex-girlfriend Taylor Swift on his mind were proven false, as he was all smiles on his mom's big day.

According to a wedding attendee, "Harry couldn't stop smiling. He hardly left his mother's side and she looked really proud of him. He sipped champagne and chatted to everyone."

The 19-year-old heartthrob was sporting a classic black suit, white shirt, skinny black tie and a white rose on his lapel that matched the bride's bouquet. Harry had the incredibly important job of walking his mother down the aisle to give her away. The event was very low-key. Harry's sister Gemma posted some updates during the wedding on her Twitter account as well.

"Well what a lovely day <3 Ta for everyone's good wishes, we're all very happy," Gemma Styles tweeted.

Harry's ex, Taylor Swift, didn't seem to be missing out, as the crooner has become the latest lucky star to share the stage with rock legends The Rolling Stones. The U.S. country star was elated this week when she got to perform with Mick Jagger and his iconic bandmates at one of their sold out gigs. The British band is currently working its way around North America with their 50 And Counting tour, and at previous gigs members have invited stars such as Gwen Stefani and Dave Grohl to join them for one off performances.

Earlier this week, Taylor Swift was seen taking her turn with the men as she performed a version of 'As Tears Go By' on the United Center stage in Chicago.