Peach is a young woman with long blonde hair, fair skin and blue eyes, framed by six lashes and small, thin eyebrows. She has an oval face with a pointed chin, a triangular nose and full pink lips. Her hair has a triangular bang in the center of her forehead, two rows of flips on her back, and two split sideburns framing her face. She has a lithe and slim figure.
Peach usually wears a pink floor-length dress with puffy sleeves, magenta panniers at the waist, a high collar and a frill of the same color at the hem.
Peach is taller than most girls, exceeded only by Rosalina, Pauline, and Waluigi. Her height is given as 160 cm (5 ft 3 in.) and her weight as 41 kg (90 lbs.).
Peach is shown to be a sweet, kind, polite, and optimistic person, while also being classy and sociable, with more and more portrayals further displaying her as clever and adventurous. She apologizes excessively for getting into trouble and requiring Mario to rescue her. She even shows concern and compassion towards her enemies frequently such as saving Mimi or making a thank-you cake for Bowser, even after Mario and Luigi defeat Bowser in a fight that Bowser started. She can sometimes be assertive when it comes to standing up for her friends; she managed to outright resist Nastasia's mind control abilities during the fake "wedding" plot, which Nastasia indicated was unprecedented. She manages to resist Shadow Queen's possession long enough to not only offer words of encouragement to Mario and his party, but also heal them (with the Shadow Queen, due to possessing Peach's body, being forced to go along with it).
Largely because of her frequency of being kidnapped, she has been the subject of a running gag where several people refer to the frequency of her abductions. Even Peach herself has referred to her kidnapping by bowser as a "recent kidnapping". Some people referred to her even being useless, such as Solid Snake and Pit (and to a certain extent, Viridi). But while Peach is often considered the archetypal damsel in distress, she is often shown actively working against her captors, such as tossing Super Mushrooms to Mario during the final fight in Dinosaur Island, sneaking around searching for power-ups and/or information to send to Mario when she was captured during the star festival in 2007, and even attempting to escape her confinement when she was kidnapped in 2011.
While Peach occasionally seems naïve, she is generally level-headed, knows when to take charge, and shows more common sense and observance than those around her, such as noticing a Mario doppleganger in the Isle Delfino vacation guide video's background during their vacation, insisting that an emergency meeting continues even after it is briefly interrupted by Bowser and deducing what Fawful was planning regarding her in 2009, and talking a stubborn Bowser into joining her and Mario when plotting against Count Bleck. She often acts as a peacemaker; for example, she offers tea to Fox and Sheik in order to stop them from fighting, and later converts Mr. Game & Watch to their cause. During her adventures in Dinosaur island, she is a motherly figure to the young Yoshi and Oogtar, she is practical and generous to a fault, such as trying to convince the Mario Bros. to return home, despite the fact that King Koopa is still after her. She also has a feisty side. Besides sports, Peach is also into ballroom dancing, video games, and gardening, and seems to enjoy exploring and trying new things.
Although she is generally depicted as kind, sociable, and generous, soccer matches do show a slightly more arrogant and petulant side to Peach, including her pitching a fit to one of her teammates and eventually jumping in a tantrum if the opposing team scores; though, after time, she will regain her composure. A similar temperamental nature can be observed if she messes up while cooking, where Peach will either stomp her foot in frustration or otherwise put her hand over her head and scream repeatedly in frustration before proceeding to wince, in either case causing Yoshi to crouch down in fear.