Introducing Walker June!

Teen Mom 2 star Chelsea Houska and Cole DeBoer have welcome a daughter on Jan. 25. Alongside photos of the couple's newborn, Chelsea—who is also mom to Aubree, 11, Watson, 4, and Layne, 2—wrote to her 6.1 million Instagram followers, "Walker June 6lbs 1oz [sunflower emoji] She decided she wanted to share a birthday with her big brother, Watson and surprised us by coming last night."