Paris Hilton welcomed two children via two different surrogates last year.Randy Shropshire/Variety via Getty ImagesParis Hilton wanted to know what it "felt like to be pregnant," so tried a prosthetic baby bump.Hilton wrote, according to Today, which obtained a copy of her book, about her motherhood journey."I know that sounds crazy, but I wanted it to feel real — even in just this small way," she wrote.Paris Hilton has opened up about her experiences welcoming children via surrogacy and the steps she took to make impending motherhood "feel real." In an extra chapter of her autobiography, "Paris: The Memoir," available exclusively in the upcoming paperback edition, Hilton shared her surrogacy journey, revealing that she wore a prosthetic baby bump so she could know what it "felt like to be pregnant."The media personality and her husband, Carter Reum, welcomed two children via surrogates last year.