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If Ellen DeGeneres is right, looks like Heidi Klum could get her wish.

The talk show host guessed Klum is expecting a girl -- a few weeks after the pregnant star told Us Weekly that's what she was hoping for!

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"We'd be happy with either," she told Us in her first interview about her pregnancy. "But it would be a lie if I said we all weren't hoping for a little girl -- especially Leni, because she would love to have a little sister.

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Klum and husband Seal will officially find out the baby's sex "probably at the end of the month," she says in an episode of The Ellen DeGeneres Show that airs Monday.

Klum -- also mom to Henry, 3, and Johan, 2 -- says she and Seal "weren't planning" on having a fourth child, "but we also weren't not planning either.

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"We were kind of leaving it open," she continues. "We were always looking around the table and always thought one more would be nice. And we kind of took one baby at a time and every time we thought yeah, one more that's it.... But I think now it's the first time I feel like this is it."