The Fashion Boy is Cool(1993)

Oshare Kozou wa Hanamaru

"Kotobuki is a cheerful outgoing 14 year old girl. She's a young lady with good fashion sense and her favorite pass-time includes browsing through specialty shops, gift shops, and clothing stores. Her favorite store is "Galopine Et Galopin", a clothing store run by a young fashion designer named Hodaka-san. Hodaka is a handsome, quiet, reserved young man who's designs are making him very popular in the fashion world."

(Source: AniDB)