MEGHAN MARKLE'S DAD ''THOMAS'' IS SO NERVOUS TO WALK HER DOWN THE AISLE.{PHOTOS}.

      Thomas Markle, 73, knows hundreds of millions of people across the world will see his daughter, Meghan, 36, marry Prince Harry on May 19.

The former Hollywood lighting director apparently approves of the nuptials because Harry “worships the ground she walks on.”

But family members claim the reclusive 73-year-old, from Rosario Beach, Mexico, will be nervous ahead of the big day.

However, Thomas Markle hopes to shake off health fears, including a knee injury, to attend the ceremony at St George’s Chapel in Windsor.

It had even been suggested that Meghan might have both her parents, who married in 1980, one year before the actor’s birth, give her away at the lavish reception.

Royal biographer Andrew Morton has written a book, ‘Meghan: A Hollywood Princess,’ about the family relationship.

In Mr Morton’s book, Thomas Markle Jr said: “I know how proud he will be to take her arm and walk her down that aisle.

“But I also know how terrified he will be.“If he doesn’t go, he will regret it for the rest of his life.

“He is not just representing his family, he is representing America.”

Meghan’s father divorced her mother, Doria, who went on to become a social worker, when the Royal-to-be was just six-years-old.Her father has not yet met Prince Harry, although the pair have spoken many times.Now Meghan is closer with her mother - but not with her half-siblings.Doria, 61, met the “amazing” Prince Harry at last year’s Invictus Games in Toronto, Canada.More photos below.