Pink Palm Puff's pink beachy sweatshirts and "preppy" style have caught fire on TikTok and YouTube. Lily Balaisis founded the brand when she was 15.

One buzzy label Pink Palm Puff, which, according to lore, is the handiwork of Lily Balaisis, a 16-year-old Canadian whose plush hoodies featuring the slogan, “Everything Comes in Waves,” has ...