This pop sensation also got her start on the Mickey Mouse Club
. She went solo at age 16, battling it out with former co-star Christina Aguilera for the spot as top popstar. As most know, Brit had her own struggles growing up — including head shaving, baby dropping, and rehab, to name a few. She seems to be back on the right track though; she regained custody of her two sons, Sean Preston and Jayden James, earlier this year and is currently in the middle of her new world tour. See why Britney made our list of celebrity parents in trouble with the law!