It's a special day in the DeBoer household: Chelsea and Cole's son is one!

Handsome Watson Cole -- who made his grand entrance during the last season of Teen Mom 2 -- turns the big 0-1 today. Feels like only yesterday this munchkin was born in the middle of a South Dakota blizzard, ahead of schedule! And now, he's a "wild one."

Be sure to offer your birthday well wishes to Watson in the comments -- and then look back at his growth, below, courtesy of his mama sharing adorable monthly updates.

2 months

3 months

4 months

5 months

6 months

7 months

8 months

9 months

10 months

11 months