The "Sorry Not Sorry" singer knows what's up: Vertical lines elongate your body. And adding cute graphics to the bold pattern increases the cute factor. "In ❤️ with this bathing suit..." she captioned this photo on IG. Us, too, Demi. Us, too.
Zara Contrasting Striped Swimsuit, $45.90
Paper London Sumatra Swimsuit, about $275
Think a one-piece is not sexy enough? Try the silhouette in a bright color, like the Pretty Little Liars star on vacation.
Uniqlo Women U Swim Racerback One-Piece, $29.90
Topshop Straight Neck Wide Ribbed Swimsuit, $45
The curvy model was spotted doing a photo shoot on a beach, wearing a new piece from the Ashley Graham Swimwear Collection. We love how this one-piece includes two different geometric prints!
Paneled Printed Swimsuit; Was $167; Now $84
Camilla One-Piece, $300
Don't be afraid to play with the full color spectrum. Does wearing a rainbow-colored suit feel a little juvenile? Elevate it with texture, like the model's knitted suit.
Madewell x Tavik® Jett Bikini Top in Rainbow Stripe, $74; Madewell x Tavik® Ali Bikini Bottom in Rainbow Stripe, $66
Solid & Striped Brigitte Striped Bikini Top, $90; Solid & Striped Brigitte Striped High Waist Bikini Bottom, $90
The actress looked relaxed and happy on vacation in Hawaii. She took to Instagram to showcase her $170 Solid & Striped cutout suit, which was designed by supermodel Jourdan Dunn in collaboration with the swim brand.
J.Crew Playa Tilden One-Shoulder One-Piece Swimsuit, $49.50
Araks Elmar One-Shoulder Cutout Two-Tone Swimsuit, $325
No matter the style, a yellow bikini, as seen on the model's IG, perfectly matches a sunny day.
Mara Hoffman Tie-Front Bikini Top, Was $120; Now $84; Express Low Rise Shimmer Basic Bikini Bottoms, $29.90
Hunza G Tracey Yellow Ruffle Bikini, $150
Leave it to the Keeping Up With the Kardashians star to inspire wanderlust on her Instagram. Her off-the-shoulder bandeau top is sultry and feminine against the Mexican backdrop.
Boohoo San Diego Bardot Lace Up Bandeau Bikini, $25
Kisuii Mila Off Shoulder Bikini Top, $130; Kisuii Mila Smocked Bikini Bottom, $100
Rule number one of swimwear: Your top and bottom don't have to exactly match. As long as the silhouette and colors complement each other, you're solid. Case in point: SelGo on her latest vacation.
Fortnight Swim Swim Tri Bralette, $110; River Island Black Tie Side Bikini Bottoms, Was $24; Now $8
Vitamin A Mia Bralette, $95; Volcom Simply Seamles Modest Bottoms, $45.50