"We were so excited to be married that we skipped the engagement altogether!" Hilty, 32, told the magazine.
The pair tied the knot in an intimate ceremony at the Venetian chapel in Sin City on Saturdaynight. The bride wore a Badgley Mischka dress and the groom wore J Lindeberg.
"I married the love of my life tonight at The Venetian Chapel in Las Vegas!!!!! #HeLikedItSoHePutaRingOnIt," the Sean Saves the World star tweeted Saturday evening.Gallagher, 33, shared a picture from their nuptials on Instagram.
The couple met at a fitness class. Gallagher is an actor and is working on a solo album. He and Hilty are set to perform together at WitZend and the Catalina Jazz Club in Los Angeles later this month.