Kaley Cuoco threw a surprise birthday party for Ryan Sweeting.

The 'Big Bang Theory' actress wanted to make her husband's big day even more special because their whirlwind romance started just after the milestone last year.

Yesterday (13.07.14) the blonde star shared a video on Instagram which showed Ryan in front of a black curtain, which dropped to reveal his friends screaming and wishing him well the day before his 27th birthday.

Alongside the clip, Kaley wrote: ''I think we surprised him :) happy birthday baby doll.''

The evening ended with a midnight pool party, and the couple seemed to have a great time.

The actress later added: ''Happy birthday to my incredible husband ... I can't wait to spend every single birthday with you ... Unbelievable night with unbelievable friends! Best surprise ever.''

Kaley had previously hinted at planning something special for Ryan because their whirlwind romance - they got engaged in September 2013 and married three months later - meant she didn't get to celebrate with him last summer.

She wrote last week: ''I met my husband right after his birthday last year.

''I finally get to celebrate w him. Oh this is gonna be good.....''