Growing older looks good on Elle Macpherson.

In a revealing new interview, the 51-year-old (yes, seriously) model dished on aging — and admitted she feels more secure in her own skin now than she did in her younger years.

"I feel very secure within myself — strong, happy and motivated. Hopefully I've gained some wisdom over the years," Elle said in the August issue of Redbook. "And I have a sense of humor about my mistakes. I've accepted that I don't always get it right, but it's not the end of the world."

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The stunning mom-of-two additionally opened up about her workout regimen and confessed she hates hitting the gym! "As I've gotten older, I've increased my joy factor. Even if I'm in NYC or London, I'll choose to walk rather than exercise in a gym," she said.

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As for her beauty routine? Elle said she keeps things simple. "I exfoliate my face every day and my body twice a day — I shower in the morning and the evening," she said. "I use a body brush, which boosts circulation, and I always moisturize afterward."