Popsugar Fashion Bikinis Best Swimsuits and Bikinis Under £100 for Summer 2021 25 Stylish Swimsuits and Bikinis That Are All Under £100 4 May 2021 by Kara Kia Image Source: & Other Stories As POPSUGAR editors, we independently select and write about stuff we love and think you'll like too. If you buy a product we have recommended, we may receive affiliate commission, which in turn supports our work. We are all very much due for some rest and relaxation, and what better way to recharge than lounging on a warm sandy beach or taking a refreshing dip in the salty blue sea. And while holidays are totally worth investing in, your resort-wear wardrobe doesn't have to be spenny to look cute. Our favourite swimsuits and bikinis of 2021 come in bold colours, delicate floral prints, and eco-friendly materials — but the best part about our top picks is that they are all under £100. If you fancy updating your swimwear collection, then we suggest seersucker, ruched, and smocked styles that are soft, comfortable, and very on-trend. Keen for a more modest look? Then try one-shoulder one-piece swimsuits that offer ample coverage for your bits without compromising on style. Another design feature we're loving for 2021 is the classic square neckline that brings a romantic, Regency vibe to the beach or poolside. Keep reading ahead for 19 of our favourite swimsuits and bikinis under £100. Reformation Figue Square Neck One Piece Image Source: thereformation.com Reformation Figue Square Neck One Piece (£98) Reformation Figue Square Neck One Piece £98 from thereformation.com Buy Now Madewell Second Wave Ribbed Structured One-Piece Swimsuit Image Source: madewell.com Madewell Second Wave Ribbed Structured One-Piece Swimsuit (£55) Madewell Second Wave Ribbed Structured One-Piece Swimsuit £55 from madewell.com Buy Now Stella McCartney Embellished Ruched Swimsuit Image Source: theoutnet.com Stella McCartney Embellished Ruched Swimsuit (£88, originally £295) Stella McCartney Embellished Ruched Swimsuit £88 from theoutnet.com Buy Now Abercrombie & Fitch Underwire Bikini Set Image Source: abercrombie.com Abercrombie & Fitch Underwire Bikini Top (£39) and Abercrombie & Fitch High-Leg Cheeky Bottoms (£22) Abercrombie & Fitch Underwire Bikini Top £39 from abercrombie.com Buy Now Abercrombie & Fitch High-Leg Cheeky Bottoms £22 from abercrombie.com Buy Now Superdown Sirena Bikini Set Image Source: revolve.com Superdown Sirena Bikini Top (£39) and Superdown Sirena Bikini Bottoms (£34) Superdown Sirena Bikini Top £39 from revolve.com Buy Now Superdown Sirena Bikini Bottoms £34 from revolve.com Buy Now & Other Stories Textured Bow Tie Swimsuit Image Source: stories.com & Other Stories Textured Bow Tie Swimsuit (£45) & Other Stories Textured Bow Tie Swimsuit £45 from stories.com Buy Now ASOS DESIGN Curve Textured Bikini in Lilac Image Source: asos.com ASOS DESIGN Curve Textured Bikini in Lilac (£36) ASOS DESIGN Curve Textured Bikini in Lilac £36 from asos.com Buy Now Emma Pake Guilia Cutout Two-Tone Swimsuit Image Source: theoutnet.com Emma Pake Guilia Cutout Two-Tone Swimsuit (£94, originally £235) Emma Pake Guilia Cutout Two-Tone Swimsuit £94 from theoutnet.com Buy Now Zara Maxi Ruffle Bikini Image Source: zara.com Zara Maxi Ruffle Bikini Top (£20) and Zara High-Waist Bikini Bottoms (£18) Zara Maxi Ruffle Bikini Top £20 from zara.com Buy Now Zara High-Waist Bikini Bottoms £18 from zara.com Buy Now Prism ² Illuminate One-Piece Image Source: prismlondon.com Prism ² Illuminate One-Piece (£85) Prism ² Illuminate One-Piece £85 from prismlondon.com Buy Now Ode & Rae Sunday Bikini Set Image Source: odeandrae.com Ode & Rae Sunday Bikini Top (£46) and Ode & Rae Sunday Bikini Bottom (£45) Ode & Rae Sunday Bikini Top £46 from odeandrae.com Buy Now Ode & Rae Sunday Bikini Bottom £45 from odeandrae.com Buy Now Weekday Porto Printed Swimsuit Image Source: weekday.com Weekday Porto Printed Swimsuit (£25) Weekday Porto Printed Swimsuit £25 from weekday.com Buy Now Solid & Striped Juliana Swimsuit Image Source: theoutnet.com Solid & Striped Juliana Swimsuit (£77, originally £155) Solid & Striped Juliana Swimsuit £77 from theoutnet.com Buy Now Zara Striped Underwire Swimsuit Image Source: zara.com Zara Striped Underwire Swimsuit (£26) Zara Striped Underwire Swimsuit £26 from zara.com Buy Now Weekday Cloud Triangle Bikini Set Image Source: weekday.com Weekday Cloud Triangle Bikini Top (£18) and Weekday Cloud Triangle Bikini Bottoms (£10) Weekday Cloud Triangle Bikini Top £18 from weekday.com Buy Now Weekday Cloud Triangle Bikini Bottoms £10 from weekday.com Buy Now Superdown Liv Bikini Set Image Source: revolve.com Superdown Liv Bikini Top (£39) and Superdown Liv Bikini Bottoms (£34) Superdown Liv Bikini Top £39 from revolve.com Buy Now Superdown Liv Bikini Bottoms £34 from revolve.com Buy Now Seafolly Petal Edge Sweetheart Swimsuit Image Source: johnlewis.com Seafolly Petal Edge Sweetheart Swimsuit (£95) Seafolly Petal Edge Sweetheart Swimsuit £95 from johnlewis.com Buy Now Simply Be Bikini Image Source: asos.com Simply Be Bikini (£32) Simply Be Bikini £32 from asos.com Buy Now COS Drawstring Swimsuit Image Source: cosstores.com COS Drawstring Swimsuit (£49) COS Drawstring Swimsuit £49 from cosstores.com Buy Now Ohoy River One Piece Image Source: ohoyswim.com Ohoy River One Piece (£83) Ohoy River One Piece £83 from ohoyswim.com Buy Now Zara Textured Bikini Set Image Source: zara.com Zara Textured Bikini Top (£18) and Zara Textured Bikini Bottoms (£15) Zara Textured Bikini Top £18 from zara.com Buy Now Zara Textured Bikini Bottoms £15 from zara.com Buy Now Prism ² Presence One-Piece Image Source: prismlondon.com Prism ² Presence One-Piece (£85) Prism ² Presence One-Piece £85 from prismlondon.com Buy Now Maiyo Marina Swimsuit Image Source: maiyo.co.uk Maiyo Marina Swimsuit (£80, originally £115) Maiyo Marina Swimsuit £80 from maiyo.co.uk Buy Now Half Baked London Sylwia Swimsuit Image Source: halfbakedlondon.com Half Baked London Sylwia Swimsuit (£95) Half Baked London Sylwia Swimsuit £95 from halfbakedlondon.com Buy Now & Other Stories Smocked Floral Embroidery Bikini Image Source: stories.com & Other Stories Smocked Floral Embroidery Bikini Top (£27) and & Other Stories Smocked Floral Embroidery Bikini Bottoms (£27) & Other Stories Smocked Floral Embroidery Bikini Top £27 from stories.com Buy Now & Other Stories Smocked Floral Embroidery Bikini Bottoms £27 from stories.com Buy Now BikinisSwimsuitSwimSwimsuitsSwimwearOne-Piece Swimsuits