British actress Emily, 30 and The Office star John, 34, began dating in 2008 and married in 2010 at Como, Italy. They were both incredibly excited about starting a family. "John's trying to make the pregnancy as easy as possible for Emily," a source told Us Weekly before their baby arrived. "He's going to make a great father."
The couple held a baby shower in December, with guess including Jennifer Aniston and Amy Adams.
"Emily opened gifts of baby clothes and toys in front of her guests as they enjoyed cookies and chocolate," a source told People. "Everyone was oohing and ahhing."
Before the birth, Emily was reported to have spent $35,000 on baby items at luxury boutique Petit Tresor – where Kim Kardashian has also reportedly bought items for her baby daughter North.
Emily, who previously dated Canadian singer Michael Buble, from 2005-2008, has described marriage to John as a "blast".
"It's just great, and I'm so happy," she said.
The couple had spoken about their desire to have children. "We're both from big families, so I think it's something we want," said Emily.