She is a tall, attractive woman who has blond hair in a ponytail and wears a red strapless one-piece bathing suit. She has a shapely figure, hence her name.
Miss Shapely is the opposite of the typical "dumb blonde"; She does math, She's smarter than her boss, the head lifeguard who thinks Tom and Droopy are both equally matched, but she only passes Droopy, not Tom because she thinks Droopy is a lot more suitable, deserved and worthy of the lifeguard job than Tom could ever be. Tom scores zero in every course. Miss Shapely likes Droopy, and hates Tom as seen through her facial expressions when Tom approaches her.