Motherhood definitely looks good on Scarlett Johansson . The actress, 30, who gave birth to daughter Rose four months ago , showed off her post-baby body last night at the G’Day USA Gala and AACTA International Awards at the Hollywood Palladium. The Lucy star wore a short tight red, white and black Preen halter with fringe that fell about halfway down her thighs. During the show, she sat next to LiamHemsworth and chatted and laughed with the Aussie actor and his wife.