Jon Gosselin and Hailey Glassman -- the 22-year-old daughter of Kate’s tummy-tuck surgeon -- enjoyed a night on the town with Ed Hardy designer Christian Audigier in St. Tropez, France, Sunday.

With his hair slicked back, two earrings exposed and wearing a new sports coat, Jon, 32, and Audigier posed for a few photos together. Jon and Hailey then looked on as Audigier posed with a sexually-explicit piece of art.

The father of eight and Audigier are planning to launch "a line of children's clothing," Audigier told E! News over the weekend. Jon and Hailey were first spotted holding hands while spending time aboard Audigier's yacht Saturday. (They also hit the chic Tahiti Beach for lunch and later popped by Prada and Hermes boutiques.)

"They're having fun," Audigier told E! News. "I'm taking care of them." Gosselin has long been a fan of Audigier's hip clothing line.

On June 4, he wore a $275 red sweatshirt while unpacking luggage outside his home in Wernersville Pa. Two days later - while taking 8-year-old twins Cara and Mady to see Disney's Up -- he donned a pair of $150 Ed Hardy jungle-inspired jeans (featuring two angry tigers on the rear). "He seems to love our clothing," Tara Malia Gregory, the company's marketing director, previously told Gregory tells Us the company's demographic is males, ages 16-30.

So what kind of message is Jon -- a 32-year-old father of 8 -- trying to send? "People who wear our clothes are edgy and fashion-forward," Gregory told Us. "They're in tune with pop culture and they like to take risks."