Kirkpatrick, 42, married his longtime girlfriend Karly Skladany on Saturday, People reports.
The ceremony, which was held at the Loews Royal Pacific Resort in Orlando, Fla., marked the second time this year that all five members of 'N Sync have gotten together, after their reunion performance at the MTV Video Music Awards this summer. Justin Timberlake, Lance Bass, JC Chasez and Joey Fatone all attended the wedding, as well as Timberlake's wife Jessica Biel, according to People.
Kirkpatrick and Skladany, a marketing rep, have been dating for more than three years. He proposed to her last year in Italy.