One particularly provocative image even sees Olivia posing in nothing but body paint, showing off her incredible physique with just a thin layer of gold coloring to cover her.
She competes six to seven times a year and rides at least five days a week.
She decided to give it a go and asked friends and family to spread the word.
The pink bikini pic appears to be behind-the-scenes from her January 2010 Maxim cover.
Her mom paid for a photo shoot with a local photographer, and then things started to happen.
A friend contacted her to let her know she had won.