Stefani, 44, is currently pregnant with her third child with hubby Gavin Rossdale and an insider tells RadarOnline.com she's treating the entire experience completely different than her first two times and is such a low maintenance mom this go-around, some are wondering if she's taking it seriously enough.
"Stefani is working through this and even going to a lot of parties and social functions as if she isn't pregnant at all, and she's not interested in having long conversations with her friends about it either," a source close to the situation told RadarOnline.com.
"She's clearly trying to be the ultimate low maintenance mom."
And her "effortless" pregnancy has inspired some friends in her inner circle — including Jennifer Aniston — it has worried some as well.
"Everybody is wondering how Gwen is doing it, and worrying a little that she might be pushing herself a bit too hard," the source added.
"Even when people bring up that she's pregnant, she tries to change the subject -- she's definitely trying to do something different with this pregnancy where she doesn't let it take over her life the way it did when she had her boys. It's a very different approach."