Actress Kaley Cuoco-Sweeting has stunned fans and friends by ending her marriage to tennis ace Ryan Sweeting.

The Big Bang Theory star's representative has confirmed the couple has split.

Suggesting her client has already ditched her married name, she tells People.com, "Kaley Cuoco and Ryan Sweeting have mutually decided to end their marriage. They ask for privacy at this time. No further statement will be issued regarding this matter."

Sweeting proposed to the actress in September, 2013, after a whirlwind romance and they wed three months later on New Year's Eve (31Dec13).

The couple battled marriage trouble rumors in the spring (15) and Cuoco-Sweeting took to social media to deny reports she and her husband were experiencing problems.

Cuoco-Sweeting showed no signs of marital stress when she appeared on chat show Watch What Happens Live last week (ends18Sep15) and even opened up about her husband's relationship with ex-boyfriend Johnny Galecki, who plays her love interest on The Big Bang Theory.

She said, "We dated, like, five years ago so I think we've both moved on... Johnny is actually one of my best friends. It's a situation that ended well... Ryan loves him, Johnny loves (Ryan), it's been a long time, so it's great. I got lucky."

Shortly after the shocking split news broke on Friday (25Sep15), Cuoco-Sweeting, 29, deleted all the photos of her now-estranged husband from her Instagram.com account, while the sportsman, 28, disabled his Facebook.com page.

The actress also stopped following her husband on all her social media accounts.