In tribute to her little boy, pregnant Vanessa Minnillo wore a gold "Camden" necklace during a hot date night with husband Nick Lachey on Saturday, Aug. 2 Credit: Courtesy Vanessa Lachey

Lachey love! Vanessa Minnillo got all dolled up to go on a hot date with husband Nick Lachey on Saturday, Aug. 2. The pregnant Dads actress got her hair styled and wore a special piece of jewelry—a nameplate gold necklace in honor of son Camden.

The 33-year-old mom posted two pictures while sitting in the car with Lachey, 40, before heading out to their destination. She accessorized her meaningful bling with a gold watch and kept her brunette locks up with a side braid. (Other celeb moms who've helped popularize the baby nameplate trend include Kate Middleton, Kim Kardashian, Adele and Beyonce.)

"Date night has turned into a wild goose chase," she wrote. "Thank You to my lady loves @ashleeroseboots and @danielepiersons for giving me this fun & flirty look!"

Minnillo and Lachey—married since July 2011—announced last month that their 22-month-old son Camden was going to be a big brother. "Can't think of a better way to celebrate 3 years of marriage to my beautiful @VanessaLachey than this! #family," Lachey tweeted on July 15, along with a beach picture of the couple's baby boy next to "It's a girl" written in the sand.