Jennifer Lopez looks stunning as she enjoys her birthday weekend with Ben Affleck in St. Tropez

Hollywood star Jennifer Lopez turned a year older as she marked her 52nd birthday in France with beau Ben Affleck. While the starlet shared stunning and jaw-dropping snaps from her birthday celebrations, she also made her relationship Instagram official.

The On the Floor singer and the Argo star have been enjoying the romantic getaway with parties on Saturday at the nightclub L'Opéra in St. Tropez, where they celebrated with an intimate group of friends.

"They are having a beautiful trip," a source told PEOPLE. "They celebrated Jen's birthday at a club last night. She looked gorgeous and very happy."

The couple then cuddled and got cozy in a booth as they sang along to her 2002 single Jenny from the Block, which featured Affleck in the music video.

JLo and Affleck made their rekindled romance Instagram official on Saturday, when they shared a passionate kiss in a photo she posted.

"5 2 … what it do …" she captioned some photos of them celebrating her birthday aboard a yacht. It was the first time the lovebirds shared a glimpse at their relationship on their own social media accounts.

Meanwhile, Jen's ex Alex Rodriguez also partied with his friends on another boat in St. Tropez, where he has been celebrating his own upcoming 46th birthday.

"He's with family and friends and people he works with," a source revealed. "He's doing great and celebrating his birthday and Minnesota Timberwolves sale."