Baby No. 2 on the way for Jack Osbourne and wife

Jack Osbourne and his wife, Lisa, are expecting their second child. Jack, the son of rocker Ozzy Osbourne, posted the announcement to his Instagram account Saturday, along with a picture of 2-year-old daughter Pearl nestled up to mommy's tummy.

Lisa provided more details on her blog, Raddest Mom. "Pearl is very happy to become a big sister. She diligently reads her 'I’m a big sister' books every night & recites to me her plans of bathing, feeding, singing to, and holding the baby. We are more than halfway through this thing & are very excited to be parents again!"

Kelly Osbourne chimed in on Twitter, exclaiming, "I'm going to be an Auntie again!".

Pearl was born in 2012. The Osbournes announced the following year that they were expecting a second child, but Lisa suffered a late-term miscarriage.