Joy Corrigan Toptional Day At The Beach

9/24/2016 12:15 AM PDT

Joy Corrigan -- Toptional Day At The Beach (PHOTO GALLERY)

It's not always easy to find a bikini that fits ... but Joy Corrigan didn't seem to care whether hers did while sunbathing on a SoCal beach.

The S.I. Swimsuit model almost lost her top several times, and even when it was kinda secured ... it was hanging on for dear life.

#Underboob