5 Hailey Bieber channeled Elle Woods with her latest bikini selfie. hailey bieber/ instagramWhat, like it’s hard? Hailey Bieber went full Elle Woods in her latest Instagram post, posing poolside in a pink metallic string bikini from pal Kylie Jenner’s Frankies Bikinis x Khy collaboration. hailey bieber/ instagram5 And squeezed in a sweat session with a weighted vest. hailey bieber/ instagram5 The star also shared a snap from her visit to husband Justin’s Skylrk pop-up in NYC.