Scott Wolf, Wife Kelley Expecting!

Scott Wolf and Kelley Limp on January 23, 2011 in Park City, Utah. Credit: Jason Merritt/WireImage

Happy news for Scott Wolf and his wife of eight years, Kelley!

The pair are getting ready to welcome their second child together, the actor, 43, announced on Twitter Friday.

"Just between the 10,149 of you and me, my wife and I are expecting our second child," Wolf joked to his followers. "We are expecting that because she's pregnant. Happy us."

Kelley Wolf (nee Limp), 35, appeared on The Real World: New Orleans on 2000, and on MTV's The Challenge in 2002. She and her former Party of Five star beau tied the knot in her hometown of Fayetteville in 2004.

Scott and Kelley are already parents to a son, Jackson, born in March 2009.