Mikayla Matthews is a beach babe. The Secret Lives of Mormon Wives star, 26, took to Instagram on Saturday, April 18, to show off her bikini body during a tropical girls' trip. While posing in front of mountains, Matthews flexed her abs in a black set featuring a balconette top with thick straps and a white floral detail in the center of her pleated cups. Matthews made her look even hotter with low-waisted bottoms finished with a cheeky back and a matching flower on her hip. The Hulu star accessorized with black shades.