Julianne Hough enjoyed a sun-drenched girl’s afternoon on Thursday when she posed poolside with her sisters and mum wearing some sensational swimwear. The professional dancer and two of her siblings, Marabeth and Sharee, were joined by their mother, Mariann, as they lounged around in the summer weather. MORE: Julianne Hough stuns in unexpected sleepwear you'll want too Julianne posted the photo on her Instagram Stories and likely left fans doing a double-take as they all looked so alike. WATCH: