Swim Collective is taking place this week at the Hyatt Regency in Huntington Beach.
Over 200 brands are showing their Spring 2018 lines to buyers from around the country.
Opening day of the show was busy, with many of the booths full throughout the day.
We spoke with many brands and noticed a few big trends for the upcoming spring:
One-pieces: One-piece swimwear is a staple in most of the lines we saw. Brands such as Maaji, Lira, Blue Life and VIX stated that one-pieces that can double as bodysuits are great sellers.
Retro 80s, or French-cut, one-pieces as seen in Body Glove, Kulani Kinis, Kaohs, Issa De' Mar and Beach Riot's lines are also making a combeack. As seen with RVCA and Chaser, one-pieces with bold graphics and branding are also popular for Spring 2018.
High-cut bottoms: High-cut bottoms, often with a thin strap, are the leading trend for bikini bottoms for Spring 2018. RVCA, Body Glove, Tori Praver, Elle Mer and Issa De' Mar all highlighted their French-cut bottoms as key pieces for the season.
Fashion meets function: Non-traditional surf brands are creating swimwear that is both fashionable and functional, giving women more options to have swimwear that not only looks good, but stays on in the water as well.
Seea has created a vintage-looking line that aims to combine functionality with femininity.
Carve Designs creates swimwear for active women of all body types.
Elle Mer, which is based in Hawaii, focuses on creating high-quality swimwear that stays on in the water as well as provides sun protection.
Issa De' Mar also focuses on designing high-fashion, high-quality suits that will stay on in the water. The majority of their tops have three points of adjustability to ensure the best fit possible.
Traditional surf brands such as Hurley and Body Glove continued to design suits that stay on in the water and have also stepped up their style.
Check out photos from the show and upcoming styles for Spring 2018 in the slideshow above.