We hear wedding bells!
Big Bang Theory actress Kaley Cuoco is engaged to her boyfriend Ryan Sweeting, according to Us Magazine.
A rep confirmed to the magazine that she and her tennis star beau of three months are due to be husband and wife.
"When you know, you know," a source added.
Rumors that the two were getting hitched began swirling after the blond actress was spotted on a Los Angeles film set wearing a massive diamond ring.
Cuoco, who is currently shooting the film The Wedding Ringer, seems to be getting the perfect practice for her real-life future nuptials.
In the film, she plays a bride whose husband hires a stranger to pose as his best man. Talk about worlds colliding!
She and Sweeting began dating earlier this summer and made their first red carpet appearance together at the 2013 Primetime Emmy Awards on Sunday evening.
The 27-year-old Instagrammed a photo of the night, writing, "#emmyweekend greatest date ever @ryansweething." OK, that's adorbs!
Before that, Cuoco dated musician Bret Bollinger as well as her Big Bang costar Johnny Galecki.
Congratulations to the happy couple!