Julia Roberts' pregnancy has caused another war with hubby Danny Moder's family.

The family feud is back on because Julia released news of her latest pregnancy to the public before informing her in-laws, say sources.

Danny's brother and sisters are livid because she not only hid the pregnancy news from them, but also kept trips to a nearby Los Angeles fertility specialist under wraps, reveals an insider.

"The Moders are so angry over the snub that they haven't even called to congratulate Julia."

They've had a rocky relationship with her since 2001, when she started an affair with Danny, who was then married.

"They had come to a truce — especially since the birth of Julia's twins in 2004 — but it's become a cold war once again," said the insider.

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