First he brought sexy back, and now Justin Timberlake is bringing adorable back. The proud papa posted a sweet snap in which he smooches his son Silas on Christmas day — and the pic is just too cute.

Along with the social media pic, the 34-year-old wrote, "This life... Truly the GREATEST gift ever. Hoping you are spending time with the ones you cherish and remembering that we are ALL family." Timberlake added, "Sending love from ours to yours. Merry Christmas, everyone!! --J and J and S."

Timberlake and Biel have been private about putting photos of their wee one on social media. The last time the superstar posted an Instagram photo of his son was on Father's Day -- June 21. In September, the performer appeared on "The Tonight Show Starring Jimmy Fallon" and shared some rare photos of Silas. Other than that glimpses of the superstar babe have been few and far between.

The "Mirrors" singer and wife Jessica Biel welcomed Silas into the world in April. This is their first Christmas as parents, and it's clear JT is loving his new role!