The actress and her sister spent the summer transferring the thousands of Polaroid photos she took on the set onto a hard drive.
"For 12 years on Big Bang I must have taken about 2,000 Polaroids of the cast... so when we wrapped my sister and I... put all the Polaroids onto a hard drive and sent it to the cast and crew," Kaley explained during an appearance on "The Kelly Clarkson Show".
"They just got it a few weeks ago, so they started texting me, like, 'I got the pictures!'".
The hit comedy ended in May, but Cuoco still catches reruns on TV and admits she often doesn't even recognise herself.
"It is on a lot and so I'll be flipping channels and once in a while I will turn it on, and if it's an older episode... I don't even look like myself and I feel like I don't even sound like myself... I went through a lot of changes - a lot of hair, a lot of different clothes".