It’s better to buy a simple rhythmic gymnastics black leotard first, comfortable and right in size. You have options to get black gymnastics uniform, its can be top, shorts, leggings e.t.c (Always ask your coach what she prefers)
Bring a bottle of water for every training
Bring a pair of rhythmic gymnastics toe-shoes for training (different from ballet shoes)
Before you buy rhythmic gymnastics apparatus, such as rope, hoop, ball, clubs and ribbon, please consult your coach who can guide you on what is needed for class.