Olivia Newton-john - Stars Turn Out For Indy 500 As Ashley Judd's Husband Takes Home Trophy

The Scottish racer, who married actress Judd in 2001, completed a total of 200 laps at break-neck speed and crossed the finish line ahead of the pack at the Indianapolis Motor Speedway in Indiana to take home the top prize.

Thousands of fans withstood the near-record-breaking heat to watch the sporting event, which drew a huge crowd of celebrities including MCBride, who sang the national anthem, Grammy winner Knight and Newton-John.

The Grease star, who was with husband John Easterling, told reporters, "We are having a blast. We haven’t stopped. It’s very exciting - great energy."

Also among the spectators were rocker Rick Springfield, musician/actor Derek Hough, celebrity chef Guy Fieri, and TV personalities David Letterman and Howie Mandel.

And other stars who couldn't attend the spectacle enjoyed watching the game in the comfort of their own home. Actress Melissa Joan Hart tweeted, "Loving watching the Indy 500 with my boys and explaining the sport! And cheering on my old buds (Tony) Kanaan and Franchitti!", while TV star Kirstie Alley added, "why the hell am I not at the Indy 500?!?!?! Ugh....I need an Event calendar !!!!"

Car-loving actor Patrick Dempsey declared, "Dario is a truly great and classy winner!" and Judd posted a picture from the winner's circle, alongside a caption which read, "There is just a little excitement in the @dariofranchitti pit."

Franchitti previously scooped the honour in 2007 and 2010.