The 37-year-old X Factor champ shared some cute snaps of the baby girl on Twitter, showing her wearing a very festive outfit.
Alongside the pictures of 'Smiley Miley', Sam wrote: "Teething but happy at the moment xx"
It looks like Sam's whole family have been feeling pretty Christmassy lately, as she posted a photo of husband Craig Pearson wearing a Christmas jumper and Santa hat on the school run!
She wrote: "Daddy all festive for the school run!!"
We're glad Sam is staying upbeat, despite recently admitting she's unsure where her career is heading.
Her contract with Simon Cowell's record label Syco is up for renewal and Sam confessed she had no idea what's going to happen.
She told the Mirror: "My contract has finished today with Syco so I don't know what's going to happen. I just don't know.
"There is a cooling-off period and then there are negotiations, so we'll see. I could be unemployed tomorrow.
"There are other things I could be doing, I am getting a lot of interest in all sorts of directions. There are other things I want to do. Negotiations start this week. I just want to get Christmas out the way first."