Be effortlessly sexy this Fall & Winter in women's swimwear and activewear from Boston Proper. Boston Proper has women's swimwear from sexy to solution like bikinis, tankinis, one-pieces and separates plus caftans and cover-ups you won't find anywhere else.

Vacation halter top
Floral graphic legging
Chic zippered sport coordinates
Laser-cut two-piece set
Laser-cut crop legging
Deep V sweatshirt
Basic leggings
Cutout cold-shoulder sweatshirt
Fit-and-flare jacket
Colorblock foil legging
Lace colorblock two-piece warm-up set
Gold foil graphic tee
High waist legging
Lattice legging
Copacabana legging
Draped mesh top
Strappy long-sleeve top
Twist band hipster bikini bottom
Hooded two-piece set
V-neck hooded tunic top
Off-the-shoulder top
Nautical colorblock two-piece set
Side-tie skirted hipster bikini bottom
Monarch legging
Copacabana macrame tank top
Lace-up legging
Crochet bikini
Mesh cropped two-piece set
Laser-cut leggings
Fringe halter bikini
Shirred halter tankini top
Everyday yoga pant
Strappy back detail tunic top
Sweetheart cup bra bikini top
Scoop-neck sweatshirt
Everyday skort