Ninjago Facts on Twitter: "269: Characters in Ninjago are rarely seen shirtless, though when it does, it usually happens when they wear swimwear. Some outfits (mostly Cole's) partially expose the chest, though
Girls in action themes? - LEGO Action and Adventure Themes - Eurobricks Forums
Female Ninjago Minifigures | Brickset: LEGO set guide and database