Take a hike! Former Playboy model Holly Madison shows off slim pins in clinging black leggings as she walks Runyon Canyon trail

She’s a married mother-of-two and a New York Times bestselling author.

But on Monday, former Playboy bunny Holly Madison swapped out her heels for hiking shoes as she made her way through a Runyon Canyon trail with a friend.

The 38-year-old reality star was prepped for her sunny outing in the Hollywood Hills, with a pair of bright purple sunglasses kept over her eyes.