VIDEO : Kim and Kanye Reveal New Baby's Name

It's Chicago ? where Kanye West was raised ? as the name of baby No. 3 with Kim Kardashian West.
Mom made the announcement Friday on her app without explanation. Chicago was born Monday, weighing in at 7 pounds, 6 ounces. She joins big sister North and middle brother Saint.
Chicago was born Monday via gestational carrier, meaning Kardashian West's fertilized egg was implanted into a surrogate.