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It's a boy!

Vanessa Lachey announced the sex of baby No. 3 on Instagram Thursday, simultaneously sharing the heartwarming moment hubby Nick Lachey found out, too!

In the video, the 98 Degrees crooner approaches the couple's home as he tells Vanessa, "I knew you knew!" Cue the boy band's iconic jam "All Because of You," because duh. Nick embraces their 4-year-old son Camden, who's holding a giant blue balloon, before kissing Vanessa and their little girl Brooklyn. Too sweet!

Vanessa captioned the video, "I have so much to be Thankful for this year... especially our littlest Lachey. When Daddy came home from tour this Summer and we were moving into our new house I shared the news. Now I'm sharing it with you!"

Nick Lachey, Vanessa Lachey, Camden Lachey, Brooklyn Lachey

Instagram

The proud mama-to-be added, "I am so very Thankful and Grateful for this family of mine! And Thankful for YOU! All your Love & support makes what we do FUN and worth it! Happy Thanksgiving Everyone! Love, V"

This family just can't get any cuter. 

Vanessa and Nick first shared their exciting news back in September, posting yet another precious announcement that indicated their bundle of joy would arrive come Spring 2017. 

Congratulations, you two!