The Big Bang Theory star Kaley Cuoco has revealed that she has undergone shoulder surgery while on honeymoon, less than a week after walking down the aisle.

Cuoco and husband Karl Cook shared the news on Instagram, posting a photo of a groggy-looking Cuoco in a hospital bed with Cook smiling beside her.

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"When your 'honeymoon' is shoulder surgery and your husband looks just as happy lol on the road to recovery - thank you for all the love and support!" Cuoco wrote.

Thirty-two-year-old Cuoco and 27-year-old professional equestrian rider Cook married at a horse stable near San Diego, California on June 30.

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The couple have been together since 2016 and became engaged on Cuoco's birthday last year.