Bristol Palin, 17 year’s old unmarried daughter of Republican vice presidential candidate Sarah Palin is pregnant, Sarah Palin said on Monday in an announcement to knock down rumors that Palin faked her own pregnancy to cover up for her child.

Bristol Palin, one of Sarah Palin’s five children with her husband Todd Palin, is about five months pregnant and is going to keep the child and marry the father.

Bristol Palin made the decision on her own to keep the baby, the aides said.

McCain campaign team said McCain knew of Bristol Palin pregnancy when he selected Palin last week as his vice presidential running mate, deciding that it didn’t disqualify Sarah Palin in any way.