Vanessa Lachey's son Pheonix

Vanessa Lachey's baby smiling when she kisses his head will melt your heart: watch

Emmy Griffiths

Aw! Vanessa Lachey has shared the sweetest video of her two-month-old son Phoenix Robert on Instagram! In the clip, the adorable baby boy breaks into a huge smile every time his mum kisses him on the forehead while she can be heard saying "I love you bubby", and laughing at his cute reaction.

GALLERY: Celebrities who have inspired baby names

The mum-of-three shared the video with her 517,000 followers, captioning the post: "My Funny Valentine", and fans were quick to gush over the beautiful moment. "Oh my word this is the best," one wrote. Another added: "Aww had to watch it three times @vanessalachey this is beautiful I love how your baby smiles and the little sounds aww I miss this. I have two little girls this makes me want a third." Vanessa and her husband Nick announced the arrival of their third child back in December. Sharing a photo of little Pheonix's hand in identical posts, they wrote: "It's a very Merry Christmas indeed! We had our Christmas Miracle. Phoenix Robert Lachey decided to show up early and was born on Christmas Eve. Mommy, Daddy, Camden & Brooklyn LOVE you very much!"

My Funny Valentine 💋💙 #PhoenixRobert

A post shared by Vanessa Lachey (@vanessalachey) on

GALLERY: Adorable celebrity new arrivals

The TV host regularly shares photos of her three children, including four-year-old son Camden and two-year-old daughter Brooklyn, on her social media accounts. She revealed how she and Brooklyn celebrated Valentine's Day after sharing a snap of them making cookies. She captioned the post: "Happy Valentine's Day!!! My favourite girl and I baked some over-sized chocolate chip cookies for our favourite guys last night... of course we snuck a few!" She also posted an adorable photo of her eldest son helping Nick to shave, joking: "Tomorrow is Valentine's Day and Cam knows I like a clean shaven guy... so, he's helpin' Daddy out."

More on: