United Kingdom, Jan. 8 -- Beyonce's daughter Blue Ivy was named after a blueberry.

The origin of the 14 year old's name came from someone who told the 44-year-old singer, her 56-year-old husband Jay - and her grandmother, 72-year-old businesswoman Tina Knowles, that she was the size of the fruit inside Beyonce's womb.

In a lengthy, heartfelt post to mark Blue Ivy's 14th birthday on Wednesday (07.01.26), Tina took to Instagram and captioned a photo collage of her granddaughter over the years with: "I remember the day that we found out about you being in your mom's womb.

"We could not have been more excited! We were told that you were the size of a blueberry and that is where your name came from!

"We all prayed together for you every si...