Canadian superstar Shania Twain, 35, and her husband, rock producer Robert "Mutt" Lange, are expecting her first child, a spokeswoman said on Thursday. She offered no further details. The singer/songwriter, whose songs include such pop-country hits as "Whose Bed Have Your Boots Been Under?" and the ballad "From This Moment," lives with Lange in Geneva, Switzerland. The two have been married since 1993. In a way, the Grammy winner ("The Woman in Me") is no stranger to motherhood. As PEOPLE has reported, Twain raised her three younger siblings after her parents died in an auto accident when she was 21. Twain says she's of Ojibwa Indian ancestry, but she was actually adopted by her Indian stepfather. Shania means "I'm on my way" in Ojibwa dialect.