Sheridan Smith will open up on her pregnancy with her son on a documentary airing tonight called Sheridan Smith: Becoming Mum.The documentary follows Sheridan along with her pregnancy as well as reflecting on her past mental health struggles.Sheridan has named her son, whom she shares with fiance Jamie Horn, Billy.She announced the arrival of Billy back in May in a post on her Instagram.Sharing a picture of her newborn's hands Sheridan captioned the post: "Our little man has arrived!"The actress added: "We are both completely overwhelmed with love."Sheridan revealed her firstborn's name in July when she shared a picture of a cake which had the name Billy on it.Sheridan said in the post: "Beautiful cake yesterday made for the little man by.
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