“What we’re going to do is have a nice romantic dinner and a few cocktails,” Lachey, 36, told PEOPLE at the Pre-Grammy Gala and Salute to Industry Icons with Clive Davis Honoring David Geffen, held at the Beverly Hilton.
But does the singer have any special after-dinner plans with his soon-to-be wife?
"We're going to go home and watch Hawaii Five-0 guest-starring Vanessa Minnillo,” he said, laughing.
Walking the red carpet with her man by her side, Minnillo, 30, dished about having Lachey’s support for the rest of her life.
“All the good stuff feels different [because] you know that you found your partner that’s there for you,” she explained. “But we’ve been dating for five years so all the nitpicky stuff is worked out.”
“We’re an old hat now,” Lachey added.