"I've never worn a thong bikini, so for that to be my first shot was like a shot of espresso for me because I had to wake up immediately," she explained in a behind-the-scenes clip of her SIshoot. "The thong is perfect, it really made me feel comfortable. I'm officially a thong girl now!"
Williams donned several different yet equally hot looks—including a yellow, strappy two-piece, a turquoise, spandex one-piece and even a pair of peach bottoms with no top—and loved how every suit she put on was "better than the last." However, she did say she preferred the "modern one-piece where it's really, really high."