12/26/2012 AT 06:40 PM EST
is already being sweet with his baby.
PEOPLE's Sexiest Man Alive
, who announced earlier this month that he and his wife are expecting their first child
, posted an adorable picture of himself cradling Jenna Dewan-Tatum's growing baby bump on Christmas Day.
"Merry Christmas," the Magic Mike
hunk wrote on his WhoSay page
where he shared the photo of the couple, both 32, smiling and dressed in matching baseball caps.
On Christmas Eve, Dewan-Tatum Tweeted
a holiday message to her followers, saying, "Merry Christmas and happy holidays to you all!! Hope you are having fun with loved ones! Xox."
Discussing starting a family, "I'm ready; I think she’s ready," Tatum told PEOPLE recently. "The first number that pops into my head is three, but I just want one to be healthy and then we'll see where we go after that."