Article continues below advertisementRonda Rousey is feeling the patriotic spirit. The MMA superstar, 38, showed off her fit physique in a red, white and blue Wonder Woman bikini as she braved a cold plunge into 55-degree water in a video clip posted via Instagram on Tuesday, August 12. Rousey enjoyed a laid-back day in the sun, finishing off her look with a large straw brim hat, sky-blue Crocs and Ray-Ban sunglasses.Article continues below advertisementRonda Rousey Stunned in a Red, White and Blue BikiniSource: Ronda Rousey/InstagramRonda Rousey went into a cold plunge.