Credit: Jon Kopaloff/FilmMagic

The engagement glow hasn't worn off!

Nineteen months after popping the question, Dax Shepard looked more in love than ever as he leaned down to kiss his fiancee Kristen Bell at Sunday's Do Something Awards in Hollywood.

The House of Lies actress -- who dazzled in an embellished Etro dress, Casadei pumps and Neil Lane jewels -- was nominated for the Do Something Movie Star Award. Also up for the honor? Orlando Bloom, Kathy Griffin, Scarlett Johansson, Daniel Radcliffe and Olivia Wilde.

What does Bell, 31, love most about her future spouse, 36?

"He constantly keeps me laughing: when I'm sad, mad, frustrated, annoyed. Regardless of what it is he can lighten the mood. He'll do anything that the mood requires," she told Us Weekly in May. "I can't get frustrated and that is a very powerful weapon. Comedy is a very powerful weapon. He's so funny that it's overwhelming."