Kaley Cuoco shares wedding dress photo

(UPI) -- Is Kaley Cuoco ready to walk down the aisle with fiancé Ryan Sweeting?

"The Big Bang Theory" starlet Instagrammed a photo of herself in a wedding dress Thursday prompting many to believe she was ready to tie the knot.

"It's my wedding day!!!!" Cuoco captioned the image, adding the hashtags #theweddingringer and #fakeweddingcalmdown.

The photo was actually a behind-the-scenes shot from the 27-year-old's forthcoming movie "The Wedding Ringer," a film "about a loner who becomes friends with a guy he hires to pose as his best man at his wedding."

Cuoco, who got engaged to the American tennis player after three months of dating, has said she has no intention of rushing her wedding. She reportedly said that she and Sweeting would begin wedding planning "in a year," as they "are enjoying being engaged."