CHRISTIE BRINKLEY - Life, Love What I've Learned at 70

THE FORMER SUPERMODEL IS EMBRACING JOY AS SHE HITS A NEW PERSONAL MILESTONE

- 

Christie Brinkley turned 70 on Feb. 2 with a huge grin, photos of herself looking strong and fit, and a sweet poem. "Looking in the mirror on my 70th birthday and what do I see, I'm finally happy with the person looking back at me," she wrote.

"I'm no longer critical and demanding; now I'm grateful and understanding." The famed former Sports Illustrated swimsuit model refuses to buy into the old-fashioned notion that her best days are behind her. "If you take good care of yourself, and you eat right, and you exercise, and you have a good mental attitude - lots of laughter, lots of curiosity, lots of adventures that keeps you young," Christie says.