Paris Hilton didn't let the sweltering Los Angeles heat stop her from stepping out in style on Wednesday afternoon.The 41-year-old socialite slipped her toned physique into a cozy gray color-blocked velour tracksuit ahead of an appearance on Jimmy Kimmel Live!Later in the afternoon, Paris was spotted exiting the filming studio in a sexy black dress and stiletto heels. Don't sweat it! Paris Hilton didn't let the sweltering Los Angeles heat stop her from stepping out in style on Wednesday.