Kate Beckinsale is a talented actress, but she's also proving herself to be a very hilarious Instagram star. The timeless beauty took to social media on Monday to share a photo of herself dressed in a — wait for it — gigantic, inflatable penis costume. "Just a girl trying to make it in a man's world . . . " she wrote alongside the LOL-worthy snap. And this definitely isn't the first time she's shown off her cheeky personality with her fans. In May, she hilariously re-created her daughter Lily's birthing photo [2] in honor of Lily's 16th birthday. See her latest snap above, then check out her sweet red carpet date with her ex Michael Sheen and his girlfriend, Sarah Silverman [3].