She was asked about how Jamie was feeling about the big tournament as England prepare to take on Russia tomorrow night.
Rebekah said: "Jamie doesn't get excited about anything, he didn't even get excited about our wedding.
"That is just what he is like, I think he thrives under pressure. I don't think he ever shows (nerves).
"He's doing good. He's looking forward to the up and coming games of course.
"And obviously it's his first tournament so the whole experience has been brilliant for him."
She said there was still a chance that One Direction star Louis Tomlinson, who was a guest at the couple's wedding, will play Jamie in a film about his life.
"It's a possibility," said Rebekah.
"We'll leave (screenwriter) Adrian (Butchart) to decide what is happening with it.
"We're 100 per cent supportive of what goes on behind (the film). What will be will be.
"I love Louis, I think he's great. Hes such a good character. He's really down to earth as well."
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