Jessica Biel Shows Off Her Killer Bikini Bod While Doing Back Flips!

Jessica Biel is jumping for joy after reaching two million followers on Instagram!

The 34-year-old actress took to Instagram to share a video of herself doing back flips into a lake.

PHOTOS: Check out the latest pics of Jessica Biel

In the video, Jessica showed off her killer abs in a bikini as she did a back flip into the lake.

“I’m flipping out, you guys: 2 million! Thank you,” Jessica captioned the below post.

Also pictured inside: Jessica Biel enjoying a night on the town with her friends on Wednesday (November 16) in West Hollywood, Calif.