Ciara has no problem showing off her bare baby bump. After channeling her inner Demi Moore with a topless photo shoot for Harper's Bazaar, the singer, who is already mom to 2-year-old son Future with the rapper of the same name, flaunted her growing belly once more on Saturday by stripping down to her Calvin Klein bra and underwear on Instagram. Ciara first announced that she was expecting a child with husband Russell Wilson back in October when she posted an adorable photo of him cradling her stomach. Since then, she has been wowing with her red carpet appearances and, of course, her epic dance video to Whitney Houston.