Once upon a time they were the best of mates, but sources are saying that big sister Britney had NO idea about Jamie Lynn's baby and found out at the same time as they rest of the world. "This is going to kill her," a close friend says. "In the end, she'll be supportive, but this is a big shock." And Britney's rep said: "Britney wishes her sister nothing but the best and asks for privacy during this time." Maybe giving her a call to say that might have been a bit more personal, Britney? Well at least the girls' mum, Lynne Spears, has decided to delay the release of the parenting book she was due to bring out in spring 2008. Possibly for the best, Lynne.
