Tom Arnold

Actor and comedian Tom Arnold announced on Twitter his wife Ashley is pregnant with their second child.

"Jax is very excited but also a bit confused with the happy news he will have a little sister this fall. #grateful," Arnold captioned a photo of his 2-year-old son Jax, holding up an ultrasound photo of his as-yet-unborn sibling.

Arnold, 56, did not reveal the baby's anticipated due date. He is best known for his work in the sitcom Roseanne, which starred his ex-wife Roseanne Barr. His film credits include True Lies and Exit Wounds.