(Cover) - EN Showbiz - Katherine Heigl and Jack Osbourne have been receiving each other's baby gifts by mistake.

Katherine and her husband Josh Kelley recently adopted daughter Adalaide Marie Hope, while Jack and his fiance Lisa Stelly welcomed their first child, Pearl, last month.

The couples live nearby each other in Los Angeles, leading to confusion when presents from their friends and family are being delivered.

"Flowers and baby clothes that were supposed to be delivered to Jack and his fiance Lisa have ended up going to Katherine and her husband Josh and visa versa," a source laughed to National Enquirer.

Katherine and Jack apparently think the mix up is hilarious and haven't been troubled by it at all. Instead, they simply walk around to each other's houses and swap boxes.

"Putting up with a little mistaken identity over gifts is all part of the fun," the insider explained.

Katherine and Josh are already the parents of daughter Naleigh, who they adopted in 2009. (C) Cover Media