January Jones pregnant sunglasses jeans top car

X17 caught up with January Jones while she shopped in LA Sunday, and she popped into Poppy -- a children's clothes boutique.

And, X17 can exclusively reveal ... she bought clothes for a baby girl!

January has yet to announce the sex of her baby (or who the father is, for that matter), but we would love to see the former model with a girl! January could name her for the month she is born in; like mother, like daughter!

Congrats, January!