Barbie dolls- do they sell clothes for the younger sisters

[DisneyAndRedSox]

DD is getting into Barbies... she got Chelsea this weekend and I know she is getting the older sister next weekend (Skipper?) Are there any B&M store that sells clothes for the girls? I have had a heck of a time finding Ken clothes and finally found 3 outfits at Walmart this weekend. Nothing like Ken's closet in Toy Story 3!!

Thanks!