's "19 Kids and Counting" will have to change its name again!

The Duggar Family made a huge announcement on "Today" this morning -- they're pregnant with baby number 20!

"We are so excited," Michelle Duggar says. "I was not thinking that God would give us another one, and we are just so grateful.

Mega-dad Jim Bob joked about the news, saying "I don't know how it happened. We didn't want to stop at an odd number."

45-year-old Michelle says she's not too worried about a pregnancy at her age -- adding "I'm really in better shape than I've been in 20 years."

The new baby is due in April.

Congrats to the HUGE family!

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