Celtics captain Paul Pierce is finally a married man. No. 34 wed his longtime girlfriend, Julie Landrum, in California over the weekend. The couple exchanged vows in front of about 80 friends and family members, a crowd that included coach Doc Rivers, Pierce’s teammate Kevin Garnett and wife Brandi, as well as Patrick Roy, Pierce’s former basketball coach at Inglewood High School. The intimate seaside ceremony took place Saturday night under a gazebo at the Resort at Pelican Hill in Newport Coast, Calif. Landrum, a 27-year-old interior designer, wore a strapless Ines Di Santo gown while Pierce, 32, looked sharp in a custom tux by Elevee Custom Clothing. The couple’s daughter, 2-year-old Prianna, served as the flower girl. We’re told the menu was inspired by Katana, one of Pierce and Landrum’s favorite LA restaurants: Appetizers included robata-grilled skewers of meat, fish, and chicken, and dinner was served in a bento box with a choice of beef tataki, black miso cod, Asian chicken, or lobster. For cocktails, there was a saki bar with a choice of infused flavored saki. The cake? A multitiered confection with chocolate, red velvet, and coconut layers. A jazz quartet serenaded celebrants during dinner, and the wedding party worked off the calories afterward dancing to DJ Tendaji Lathan. The couple’s first dance was to R. Kelly’s “You Made Me Love You.’’ Mr. and Mrs. Pierce will be in Boston for a while. The 2008 NBA Finals MVP just signed a four-year, $61 million contract.