See WWE superstar John Cena's looks from over the years

WWE superstar John Cena has been star for more than a decade. And when you're on top for that long, you have to shake things up every now and then.

From his days wearing throwback jerseys and snapback hats to his Marine-style camouflage to his assortment of rainbow-colored bright neon shirts, the 16-time WWE Champion has changed up his look on numerous occasions, even if they typically involve him wearing jorts.

Here's a look at Cena various memorable looks from over the years:

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Bodybuilding Days

OVW

Thuganomics

Thuganomics

The Marine

Doctor Mustache

Standard

Vanila Ice

Bloody

Bright Yellow

Dumb and Dumber

Nikki Bella

Sisters

Facial Hair

After his breakup with Nikki Bella in April, Cena was spotted out in public taking photos with fans with a mustache and the start of a beard.

When asked why he had ditched his clean-shaven look, he explained it was a personal challenge.

"I've just been put in a peculiar place recently where I'm challenging myself to do things I've never done before," Cena said in an ESPN interview. "I've never grown facial hair. I had a few days free, but I since shaved it off before I did the Today show. I'm clean shaven and I'll probably go clean shaven from here on out, but I have some projects coming up that might have called for a look like that and I wanted to make sure before we did it that it was possible and it looked OK."

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