With all the baby trouble in Britney Spears' life, one friend believes the news that she is about to become an aunt could "kill her".

Brit's 16-year-old sister, Jamie Lynn, announced that she is expecting her first child with boyfriend Casey Aldridge.

According to reports, while other Spear members were informed about the pregnancy over Thanksgiving, Britney only heard the news through tabloid stories.

A friend of the "Toxic" singer told PEOPLE, "This is going to kill her. In the end, she'll be supportive, but this is a big shock."

PerezHilton.com was told exclusively by an E! Online reporter, "Britney is aware of the news regarding Jamie Lynn's pregnancy. She wishes her sister nothing but the best and asks for privacy during this time."

The sisters have been distant of late, mostly due to Britney's wild and erratic behavior.

According to PEOPLE, Jamie Lynn's advisers have been keeping her away from her 26-year-old sibling.

The source said, "Britney doesn't have to listen to anyone now but her sister still does so who knows what people are telling her. She has her career now too."

Britney recently lost custody of her two young children and sees her boy on limited and monitored visits.

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