2018's Sexiest Celebrity Swimsuits Broken Down by Month — You're Welx

Kourtney Kardashian wore this white Sommer Swim bikini while on vacation in Nayarit, Mexico, showing off its supercheeky, strappy fit.

Lady Gaga rang in the new year in a white thong bikini that was complete with gold chain detail.

Rosie Huntington-Whiteley started off 2018 in a very sexy two-piece by Kiini, completing the look with Le Specs sunglasses.

Ashley Graham and Tabria Majors, two of the hottest Swimsuits For All models around, showed off some very sexy white triangle bikinis on the beach during a photo shoot.

Nina Agdal's olive thong bikini by Juillet showed off her tan.

Gabrielle Union got her hands on one of Solid + Striped's most revealing one-pieces from the brand's collaboration with a handful of models.

"Forgot to pick my wedgie," Nina Agdal jokingly posted about this white ribbed scoop-back one-piece with a cheeky fit.

Iskra Lawrence's red bikini top with a row of rings is from Aerie. It's one of our favorite sexy styles she's debuted from the brand.

Emily Ratajkowski brought along this high-rise copper swimsuit from her line Inamorata Swim for her honeymoon.

Lea Michele definitely knows the meaning of a strappy bikini. When the actress shared a tropical poolside snap, she knew best to show off the back of her suit.

Ireland Baldwin watered the plants on set, showing off the cheeky fit of this ribbed olive number.

Iskra Lawrence showed off her booty in this high-leg two-piece from Aerie.

While on vacation with her sister Kim in Turks and Caicos, Kourtney Kardashian wore a gold metallic bikini that helped us zero in on her glistening abs.

Bella Hadid's newspaper bikini is from her friend Frankie Stark's new swimwear line: Dipped in Blue Bikinis. The "triangle" style fit of the bottoms with two strings and only a swathing of coverage made it one of the hottest of the year.

Kim and Kourtney Kardashian went for a walk on the beach in Turks and Caicos wearing high-rise bikini bottoms — Kim's in neon pink and Kourt's a black string design.

Alessandra Ambrosio packed this orange Peixoto swimsuit with a superlow plunge for Coachella.

Kim's Chanel bikini definitely drew attention to her — ahem — best assets while sunbathing in Turks and Caicos.

Bella Hadid gave up a bikini top entirely when she posed in this white ruffled bikini bottom at Coachella, accessorizing with just a body chain.

Irina Shayk wore a black mesh swimsuit that hugged her toned figure as she bathed in the water.

Demi Lovato's cheeky navy one-piece featured cutouts at the back. There was no better angle to snap when she posed in the pool at Coachella.

Bella Hadid let the straps of her turquoise Chanel bikini fall off her shoulders while soaking up the sun.

Shay Mitchell's L*Space swimsuit featured a mesh overlay that was tight-fitting and absolutely eye-catching.

Nina Agdal's sexy, skimpy bikini was essentially just a censor strip across her chest.

Kourtney Kardashian's sea green swimsuit featured so many cutouts, it was as revealing as a bikini. She accessorized this look with a pair of Emporio Armani sunglasses.

Emily Ratajkowski modeled one of her sexiest Inamorata designs in red snakeskin.

Halsey wore a pastel pink bikini this summer with a matching an Anti Social Social Club cap.

Gigi Hadid wore this Frankies bikini set that cost $165 over the summer.

Jennifer Lopez showed off her amazing abs in a black and white bikini and a straw hat while on vacation.

Jane the Virgin star Gina Rodriguez wore a lavender and white bikini set in Mexico.

Singer Dua Lipa wore a white bikini by Solid & Striped when celebrating her 23rd birthday in Ibiza.

Vanessa Hudgens wore a red bikini and checkered coat while drinking frozen margaritas out of a blender on her boyfriend's birthday.

Supermodel Naomi Campbell wore a white bikini with a chained anklet while on a luxury yacht.

Khloe Kardashian wore a white bikini with a cream and pink cover-up on the beach. She accessorized it with a headband, tinted sunglasses, and long tasseled earrings.

While on vacation in Hawaii, Olivia Munn wore a classic white triangle bikini.

Tracee Ellis Ross wore a red leopard print bikini while in Mexico.

Kendall Jenner wore a teal Gooseberry Seaside bikini with a wide-brimmed straw hat for a day by the pool.

Model Bella Hadid wore a bubblegum pink bikini while soaking up some sun.

Emily Ratajkowski wore a cheeky black Inamorata one-piece.

Iskra Lawrence wore a burgundy Aerie bikini.