Audrina Patridge claimed Leonardo DiCaprio once asked for her phone number. The former ‘Hills’ star recalled how she flew out to Las Vegas to attend a prince’s birthday party when she caught the eye of the ‘Wolf of Wall Street’ actor at an afterparty in a nearby club, but found the idea of accepting his invitation to sit with him and his guests too “intimidating”. Writing in her new memoir ‘Choices: To the Hills and Back Again’, she revealed: “I was there with a few of my castmates from the film ‘Sorority Row,’ as well as Megan Fox and Brian Austin Green, and even Leonardo DiCaprio… “This bo…