Oddly, Jamie Lynn took no notice

Britney Spears is bitterly upset at her sister for getting herself pregnant, after she'd explicitly warned her against becoming a gymslip mother.

And not just because, like, gymslips are so, you know, over now?

"I'm really disappointed in her," Britney raved to a friend. "I told her over and over just to be a kid and let the adult things like sex and drinking and all that wait."

So it turns out that - while we might have thought Britney was living through some sort of out-of-control carcrash life - she was merely trying to lead through bad example. Sadly, her warning from sistery has failed to work.