Lots of fun mix and match clothing for ball-jointed dolls are available to pre-order from Jpop Dolls and Ajumapama.
This company carries lines of clothing for SD-sized dolls (boys and girls), MSD girls, and YoSD sized items (both boys and girls). Additionally, you'll find shoes and Kelly Sally BJDs, too.
Plus, you can't very well shop at Jpop and not check out their wigs--though be sure to check out separately for pre-ordered items and in-stock items. Add yourself to the mailing list to get in on all the latest specials!