Tori Spelling announced via Twitter Monday that she is pregnant with her third child.

Spelling and her husband, Dean McDermott, have been married since 2006. They are the parents of a 4-year-old son and 2-year-old daughter.

"I know there's been a lot of speculation, so I wanted everyone to hear from me ... it's official ... Dean & I are PREGNANT!" said Spelling, 37, Tweeted.

The baby's gender and expected due date were not reported.

The couple have appeared in the reality TV shows "Tori & Dean: sTORIbook Weddings," "Tori & Dean: Inn Love" and "Tori & Dean: Home Sweet Hollywood."