There are quite a lot of shirt lifts due to stretching in the movie “Sorority Boys” (2002). Check out anywhere from 1:03:00-1:11:00. The specific scenes here are from 1:03:00-1:06:00
Here is Bree Turner, who puts her arms up for celebration, making her shirt ride up to expose her belly button.
Also, there is this other actress by the name of Monica Staggs, who mostly works as a stunt double. Monica Staggs’ belly button also gets exposed in some scenes.
Back-up:
https://www.imagebam.com/view/METXDTU
https://www.imagebam.com/view/METXE31
https://www.imagebam.com/view/METXE3D
https://www.imagebam.com/view/METXE3E
https://www.imagebam.com/view/METXE3F
https://www.imagebam.com/view/METXE3G
https://www.imagebam.com/view/METXE3T