Holly Willoughby is a goddess in chic black swimsuit in Portugal - shop the look

Pippa Middleton always looks incredible in her swimwear, pictured above in a red string bikini by Heidi Klein while on holiday in St. Barts, just six months after giving birth. The sister of the Princess of Wales has also been spotted in the likes of BY MANILA and ViX .

It looks like Pippa is wearing the Tortola bikini in red, which appears to be sold out, but there's a whole collection of gorgeous colours available at Heidi Klein. I love this very similar coral shade, but it also comes in everything from white to jade green.

Dua Lipa has a swimwear wardrobe I would love to raid, but the next best thing is shopping one of her most-loved bikini brands, Isa Boulder. Based in Bali, the stunning designs are made for tropical climes.

Isa Boulder's reversible metallic bikini is made from lustrous stretch-satin, and features the brand's signature ruched, underwired cups. It's perfect to pair with an equally luxe cover up at a beach bar or party.

Holly Willoughby shared an Instagram selfie looking gorgeous in Hunza G's iconic pink swimsuit. Famed for its textured sculpting seersucker material, the brand is a hit year after year with fashion fans. It's also been seen on the likes of Emily Ratajkowski, Rosie Huntington-Whiteley and Michelle Keegan. 

I love the bubble gum pink hue Holly chose for her Hunza G seersucker swimsuit. It features a square-neck cut with high-cut legs and a low back. She's since also been spotted in Hunza G's very chic black Domino swimsuit while on holiday in the Algarve.

Amanda Holden loves a swimwear pic, which is great for our summer inspo. She's a big fan of Melissa Odabash, having been seen in several of the brand's bikinis and swimsuits, like this amazing red two-piece.

Former model Melissa Odabash launched her own swimwear line when she couldn't find the bikinis she wanted. Renowned for playful prints and vibrant colours, they also come in the most figure-flattering cuts. The Brussels bikini has a ring-embellished halterneck top and high-rise bikini bottoms with an overlay panel at the waist.

Hailey Bieber's go-to swimwear style? A minimalist string bikini, and her most worn brand is Tropic of C. Founded by fellow supermodel Candice Swanepoel, it sells tops and bottoms separately, with each colour available in multiple different cuts, so you can mix and matching according to the silhouette and coverage you're looking for.

Hailey appears to have the Equator top and Praia bikini bottoms, which are both still available to shop. They feature minimal coverage, with a second skin softness and two-way stretch. The fabric has a matte finish and UV protection.

It's no secret Demi Moore has an incredible figure, but she wears some pretty great bikinis too. She shared a selfie wearing a navy two-piece from Andie Swim, which is famed for its high quality fabrics and flattering cuts.

Andie Swim is all about well-made, well-cut swimsuits that are so comfortable and you don't have to think about adjusting them. You can send the brand an email for fit advice, sizing support, and try-on tips. Plus there's a fit quiz to help you find your perfect size.

Jennifer Lopez showcased her toned figure on Instagram in Frankie's Bikinis' Firefly two-piece. Made from a luxe scrunch ribbed fabric, the skimpy swimwear featured tie detail on the top of each arm.

As well as J.Lo, Frankie's Bikinis counts Pamela Anderson, Kendall Jenner and Bella Hadid among its biggest fans. The US brand is revered for its range of sleek and sexy string bikinis. While Jennifer's exact style is sold out, the Naia bikini is so similar, featuring string ties that wrap around the neck and back for adjustable comfort.

Stacey Dooley left fans in awe when she posted a poolside Instagram photo wearing a black scalloped bandeau bikini top and matching briefs by LA-based brand Marysia.

Marysia has also attracted the likes of Gwyneth Paltrow and Lupita Nyong'o since launching in 2009. Made from premium Italian fabrics, the swimwear is cut by hand in a couture factory. Stacey's very chic two-piece is still available to shop at Harvey Nichols.