Beyonce -- Blue Ivy's Birth Was 'Natural'

Beyonce says she gave birth to Blue Ivy the same way women have been giving birth for thousands of years ... naturally -- insisting she did NOT get a C-section.

There were reports the singer birthed Blue with the help of a scalpel -- but Bey and Jay-Z released a joint statement moments ago, claiming, Blue "was delivered naturally at a healthy 7 lbs and it was the best experience of both of our lives."