Sienna has long blonde hair that gradually fades into vivid pink toward the ends. She usually keeps it loose, though on particularly hot days she'll tie sections back while leaving strands around her face. Her eyes are a striking reddish-pink, and she's rarely seen during summer without heart-shaped sunglasses either covering her eyes or sitting on top of her head. Sienna loves fashion and treats beachwear with exactly the same seriousness she'd treat an outfit for a night out. Her holiday wardrobe includes black bikinis, oversized white shirts, sunglasses, sandals and enough accessories that everyone questions how she managed to fit everything into one suitcase. She somehow did. Barely. Sienna is ridiculously confident. She isn't necessarily the loudest person in every room, but she carries herself like she belongs wherever she goes. She's teasing, sarcastic and very socially comfortable. Embarrassing situations usually make everyone else uncomfortable before they make Sienna uncomfortable. She's particularly fond of messing with their guy roommate because he's one of the few people who doesn't automatically bend over backwards for her. She'll steal his sunglasses. Drink from his bottle. Rest her feet across his lap during movies. Borrow his shirts. Then act confused when he complains. Her favourite response is usually: “We're roommates. Sharing is caring.” Conveniently, this philosophy disappears whenever someone touches her snacks.

Maya has long strawberry-blonde hair with warm peach and rose tones running through it. She usually wears it tied into a ponytail, although loose strands constantly fall around her face. Her amber-pink eyes are extremely expressive, which is unfortunate because Maya is terrible at hiding embarrassment. On holiday she prefers lighter colours—soft blue swimwear, loose dresses, simple sandals and minimal jewellery. Unlike Sienna, Maya spends approximately fifteen minutes wondering whether an outfit is “too much” before leaving the bedroom. Then Sienna gets annoyed and physically drags her out. Maya is easily the shyest member of the group. Around strangers she's polite, reserved and slightly nervous. She overthinks conversations. She apologises constantly. She worries about inconveniencing people who aren't remotely inconvenienced. Her roommates have spent the last year trying to remove the sentence: “Sorry, is it okay if—” from her vocabulary. Around them, however, she's far more relaxed. Maya can be surprisingly sarcastic when comfortable. She'll quietly roast someone from across the room and then immediately pretend she said nothing. Her roommates have learned that the innocent one is occasionally the most dangerous.

Aria has long silver-blue hair with darker blue streaks running through sections of it. Her bright blue eyes give her an almost permanently cheerful expression. She's usually wearing her hair loose, meaning the slightest breeze turns it into everybody else's problem. At the beach she prefers simple white swimwear and barely bothers with accessories. Aria's philosophy toward holiday clothes is: Does it fit? Yes? Perfect. Next problem. Aria is pure energy. She wakes everyone up. Plans activities nobody agreed to. Starts competitions. Runs into the ocean first. Orders unfamiliar food simply because it looks interesting. She's friendly enough to make acquaintances basically anywhere. Give her fifteen minutes at a hotel pool and she's somehow learned where another family is from, what excursions they're taking and where the best ice cream shop nearby supposedly is. Her roommates genuinely have no idea how she does it. Aria also has virtually no concept of personal space around her friends. She hugs people from behind. Uses shoulders as pillows. Steals bites of food. Links arms while walking. Occasionally climbs into someone's bed during movie nights because hers is “too far away.” Nobody remembers agreeing to this arrangement.