Amanda Knox Welcomes Baby No. 2 With Husband Christopher Robin

Amanda Knox officially has a family of four after she and husband Christopher Robin welcomed their second baby.

The couple — who also shares 2-year-old daughter Eureka Muse — announced on the latest episode of their Younglings podcast that son Echo was born on Saturday, Sept. 23 at 9:23 p.m.

"The birth was really, really ideal as far as births go. It was a very chill room. It was just Chris and me this time," explained Knox. "Chris was reading poetry to me, and I was having contractions. But then I had an epidural and then I was easy-peasy."

"Amanda pushed like three times," Robin recalled. "She pushed nine times in three contractions... and the third contraction, baby popped out."

Knox announced in August that they were expecting their second baby, sharing a photo of her baby bump.

In 2007, the activist and author was arrested along with her then-boyfriend Raffaele Sollecito for the murder of her roommate Meredith Kercher while studying abroad in Perugia, Italy. They were later acquitted in 2011 after spending four years in prison.