Jenna Johnson’s Dream Year: Wins Mirrorball Trophy and Celebrates Her 31st with StylePlay VideoClose Player

   

Jenna Johnson's dancing through another year around the sun ... turning 31 years old Saturday -- and, we've got her hottest shots to celebrate the day.

Jenna Johnson's Hot Shots

The "Dancing with the Stars" pro -- who actually met her husband Valentin Chmerkovskiy on the show years ago -- is ready for any weather ... stunning in both a bikini and a flowing dress when the sun's shining.

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Sundress season is basically year-round in Los Angeles, and Jenna's always ready to feel the breeze whip through ensembles like this white outfit dotted with strawberries.

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Even the colder months can't stop JJ from flaunting her best revealing outfits ... flashing a fierce stare into the camera with glittering Christmas trees stationed behind her.

It's clearly not too frigid in the snap ... 'cause Jenna's still able to wear a crop top and coat combo that is sure to launch happy fans into a jaunty two-step.

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Of course, Jenna knows when it's time to get down to business too ... which means switching out sundresses for sweats -- and throwing on workout clothes to practice some of her powerful dance moves.

Jenna's appeared on eight seasons of "Dancing with the Stars" -- and, she's recently become a powerhouse mainstay on the show ... winning twice, including just last season with former 'Bachelor' Joey Graziadei.

A year older, a year wiser -- and, totally ready to repeat as champ. Happy birthday, Jenna!!!