Nick and Vanessa Lachey's Romantic One-Year Wedding Anniversary Celebration

Parents-to-be grab dinner at the Little Door in West Hollywood; Vanessa thanks her hubby for making her "the happiest woman I can be"

Nick and Vanessa Lachey, you two sure are cute.

On Sunday, the parents-to-be celebrated their one-year wedding anniversary with a date night in West Hollywood. Nick, 38, and Vanessa, 31, grabbed a romantic dinner at the Little Door restaurant.

Vanessa, wearing a loose cream top, black leggings and stilettos, was all smiles with her man. She took to Twitter to gush about the past 365 days of wedded bliss.

"What a year!," she wrote. "Love, Marriage, Love, Baby. Thank You @NickSLachey for constantly making me the happiest woman I can be. #HappyAnniversary"

The happy couple revealed last month that they're having a little boy. "We can't wait to meet him soon!"  the first-time mom wrote on her website.

Somehow we think these two will make great (and gorgeous!) parents.