Can you guess the celebrity baby bump? This one comes via Twitter courtesy Vanessa Lachey, who’s expecting her first child with hubs Nick Lachey. The Wipeout host has turned to Twitter like so many celebs before her, documenting not only her growing baby bump but also all her hopes and dreams (she’s dying for a boy). Needless to say, Twitter is chock-full of celebrity baby bumps, where everyone from Jessica Simpson (yup, she’s still pregs) to supermodel Alessandra Ambrosio are flaunting their growing bellies. Click through our gallery to see who’s hopped on board the Mommywood trend.