Laura Proctor for BIIt was summertime when Lauren Brown's daughter pleaded with her to buy an $89 hoodie."I thought the price tag was a little steep so I told her, maybe for her birthday," Brown told Business Insider. She kept asking for it, and that fall, for her eighth birthday, Ada got the hoodie of her dreams.The hoodie wasn't any regular sweatshirt, at least not in the eyes of Gen Alpha. It was a Pink Palm Puff — a new obsession of tween an…