Kim Zolciak: Kroy Knew It Was Twins

The 'Don't Be Tardy' star says her husband "wasn't too surprised."

Aug 22, 2013, 2:22 PM ET

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Kim Zolciak surprised the world this week when she announced she was having twins. But one person in her life knew all along: her husband Kroy Bierrmann.

The Don't Be Tardy... revealed on Twitter Thursday that her husband had a gut instinct they were having two kids.

Kroy told me when we first found out we were pregnant & I was soooo incredibly exhausted there was 2 in my belly!! He wasn't too surprised!
â Kim ZolciakBiermann (@Kimzolciak) August 22, 2013

While Kim has not opened up about the sexes of her babies—she has said she's hoping for a girl—she revealed her sonogram to E! News and shared that she was "completely shocked...I can't believe I am going to be a mom to six children. It's going to be very busy but it's a dream come true."

Kim and Kroy have two children together—Kroy Jr., and Kash—and Kroy recently legally adopted Kim's other two girls, Brielle and Ariana.