When it comes to expanding her celebrity, Michelle Jenneke still has some wiggle room. The Australian hurdler now appears in the Sports Illustrated Swimsuit Issue, and those interested in getting a behind-the-scenes look at her photo shoot can watch the video above.

Jenneke, 19, has used her killer smile, world-class bod and YouTube fame off her pre-race bouncing at the IAAF World Junior Championship last summer to overcome moderate cred as a competitor. (She's still more than a second slower than fellow Aussie and Olympic champ Sally Pearson.)

But at least for Jenneke's SI bikini shoot, the stopwatch is off.

"I looked at the pictures and I think, wow, is that really me?" Jenneke says in video.

In December, the young athlete appeared as a lonely man's fantasy object in a comedy short by The Chive. She did her well known gyrating dance in the skit, just as she did when the Internet took notice of her charms.