Niki Taylor
turns 38 years old today -- and she's still as stunning as ever!

The blonde haired beauty started modeling when she was just 13-years-old, landing her first Vogue cover at 15.

She's also spread Seventeen, Sports Illustrated and Shape -- not to mention, Taylor's lent her famous face to companies like L'Oreal, Gap, Liz Claiborn and more as their brand spokesperson!

Most recently, Niki's starred on "The Celebrity Apprentice."

Taylor's also been just as successful in her personal life -- in 2006 she became engaged (and married the same year) to NASCAR driver Burney Lamar ... after just three dates! The couple currently resides with their children in Brentwood, Tennessee.

Happy birthday Niki! Click "Launch Gallery" above to see even more supermodels like Tyra, Cindy and Naomi ... then and now!

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