Romijn and O'Connell
Fernando Allende/Splash News
09/08/2008 AT 04:45 PM EDT
Jerry O'Connell admits he made a big
The star of the new sitcom Do Not Disturb
is apologizing to wife Rebecca Romijn
– who is pregnant with twin girls
– for joking about her size
when he appeared on a late-night talk show Friday.
"I regret calling my wife 'huge' on Conan O'Brien
," O'Connell tells PEOPLE. "I meant to say that there are specific areas of my wife that are larger than normal and growing every day. All other portions of my wife are quite petite. I apologize to her and will be coming home with flowers."
O'Connell, 34, and Romijn, 36, who will appear on Ugly Betty
again this fall, expect their daughters this winter.
Coming soon: Rebecca & Jerry's twin girls! RELATED GALLERY:
See the cutest celebrity twins on the covers of PEOPLE