Bosses at children's TV network Nickelodeon, where the 16-year-old fronts hit show Zoey 101, have confirmed the baby news.
A spokesman for the TV network said, "We respect Jamie Lynn's decision to take responsibility in this sensitive and personal situation.
"We know this is a very difficult time for her and her family, and our primary concern right now is for Jamie Lynn's well being."
Reports suggest the father is student Casey Aldridge, who Spears allegedly dumped this summer (07). Jamie-Lynn has told OK! magazine she intends to keep the baby.

Tags: britney spears, jamie-lynn spears, pregnant