November 04, 2015 03:13 PM

Reason #1,345,9087 we want to grow up to be Christie Brinkley: She still wears feather mini dresses at 61. And considering her legs look like a 30-year-old’s (reminder: this is her bikini body), it’s no surprise she likes to show them off.

Theo Wargo/Getty

The ageless supermodel stepped out at the premiere of the new USA comedy Donny! at the Rainbow Room Tuesday night, and she was glowing from head to toe. (Sure, she probably had an amazing spray tan, but she also has that new relationship glow.) Brinkley donned a drop-waist, feather skirt micro-mini Elizabeth and James LBD for the occasion, plus sleek cap-toe pumps and a voluminous waves that would rival any Victoria’s Secret Angel.

And if you’re thinking to yourself “Christie’s blonde looks better than ever,” we found out her secret. She still uses Sun-In!

“I don’t use it all the time, but it’s something that I will use if I can’t get to my hair dresser or if I just feel
like my hair needs a little oomph, it’s starting to fade or whatever,” she told PEOPLE of her favorite drugstore beauty product. “A little streak here, a little streak there.”

Theo Wargo/Getty

RELATED PHOTOS: See the latest red carpet looks!

As for her amazing skin (have you seen how youthful she looks without makeup), it’s probably a result of her healthy lifestyle — and her own eponymous line of skin care products.

What do you think of Brinkley’s latest look? Do you think she defies aging? Sound off below.

–Brittany Talarico

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