Fabrics are soft and plush, not stiff. And kids love oversized clothes — big, bulky shirts and sweaters, for example, are in favor. FIRED-UP FANS: Jamie (left) adds a t-neck polo to her matching cotton knit sweater and skirt. Allies jumper and t- neck polo also match. All clothes are Heartstrings brand, from Loretta Lorion and Baby & Me. Both girls wear wide-brimmed Carol Amper- brand hats. rALL '01 13