The Olympic gold medalist, 26, married Harry last September at The Ashes, near Leek in Staffordshire.
But with around seven weeks to go before they become parents for the first time, it seems Rebecca is feeling nostalgic.
She posted the four minute clip to Twitter, writing: “I don’t think I’ll ever get sick of watching this #wedding #love [sic]”
During the video we see Rebecca and Harry exchanging their vows, holding back tears of happiness.
Rebecca says: “Harry, you truly are my best friend. you know me better than anyone else in the world and somehow you still manage to love me.”
It then shows the lead up to the moment Rebecca and Harry said ‘I Do’, including her getting her make-up done, while Harry’s speech plays in the background.
Opening up about the first time he saw Rebecca, Harry says: “The only image that flashed into my head was the signed photo of her I had hanging on my bedroom wall at home, after the 2008 Beijing Olympics.
“And now we’re here today as best friends, in love and husband and wife. It’s not every day you get to say you married your idol.”
The whole of their special day is cut into the short clip, from Rebecca putting on her dress to their first dance – and it’s clear it was perfect!
Watch the clip and let us know your thoughts below.