Tiffani Thiessen had her second child, a boy, yesterday, the actress announced on Instagram.

She posted a photo of her daughter holding the newborn, writing, "Yesterday Harper got a little brother! We are so excited to introduce Holt Fisher Smith. Our perfect sweet little man."

The White Collar star and former beauty queen announced she and husband Brady Smith were expecting in January.

"We could not be more excited about expanding our family," she wrote on Instagram at the time. Daughter Harper was born in June 2010.

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