Yesterday was the official first day of summer, but PETA's Web site has been scorching for days, thanks to our Sexiest Vegetarian Celebrity contest. We're into the final heat—voting ends this Wednesday, June 23—so if you haven't weighed in, don't let those lazy, hazy, crazy days of summer get you just yet. Put the pedal to the metal and vote now to help us choose this year's Sexiest Vegetarian Celebrity. Here are some of the current frontrunners:

• The caring king of six-pack abs, celebrity fitness trainer Bob Harper
• The delightfully raunchy star of Get Him to the Greek, Russell Brand
• Dashing do-gooder and Twitter founder Biz Stone
• The brash and beautiful comic who can make just about anyone blush, Sarah Silverman
• The gorgeous songbird who makes caring people giddy with Glee, Lea Michele
• The elegant vegan environmentalist* and star of Bones, Emily Deschanel

I know it's tough to choose just one man and one woman, but if I can do it, so can you. My personal faves: The Howard Stern Show cohost with the infectious laugh, ravishing Robin Quivers, and the achingly handsome actor Joaquin Phoenix. Now go cast your vote for two sexy veggie celebrities to help us decide the Sexiest Vegetarian Celebrity of 2010.

Written by Karin Bennett

*We all know that you can't be a meat-eater and call yourself an environmentalist.

We were already crushing on The Biggest Loser's tough-love trainer Bob Harper after he went vegetarian and then signed on to the Physicians Committee for Responsible Medicine's 21-Day Vegan Kickstart program. But we're in full-on love after learning that Bob adopted his new canine companion from an animal shelter, saying, "It just kills me when people spend money on a dog when there are dogs in shelters waiting for someone to take them," adding, "I want to tell them, 'No! Those are puppy mills!'"

We couldn't have said it better ourselves!

Written by Jeff Mackey

As one of America's toughest trainers, The Biggest Loser's Bob Harper is hardcore. He's taken 100 pounds off a man in a mere seven weeks (remember Rudy?), breaks contestants down and builds them back up during Last Chance Workouts, and gives us the skinny with his Trainer Tips on NBC. Now he's focused on challenging the country to a 24-hour vegan cleanse.

Bob's latest tweet reads, "Your Challenge today is to go the next 24 hours, starting now eliminating ALL animal products. Good for your heart AND the environment!!"

Go vegan? But how? Well, in the famed words of Bob himself, "Just stop talking and do it!" Or, you know, a vegetarian/vegan starter kit works just as well.

Written by Christine Doré

As an obsessed fan of The Biggest Loser, I just about jumped out off the couch last night when America's toughest trainer Jillian Michaels walked onscreen wearing PETA's ever popular "Fight Breedism" T-shirt.

For the whole first half of the show, while the contestants were filming in Washington D.C., Jillian rocked the compassionate message across her perfect abs—even during the workout! Jillian is one of the most inspirational women on television and knowing that she is fighting against obesity and animal homelessness rocks my world!

My Jillian-mania escalated to even greater higher heights when she took the winners of the challenge to Subway for lunch and told the crowd that she recommends the vegetarian sub because it's her favorite. Fellow trainer Bob Harper is already vegetarian, so I'm beginning to see a pattern here … no wonder they look so good.

Written by Christine Doré

dietsinreview / CC

Seriously, all the cool kids are going vegetarian these days—and with great results. Just as our friend Mike White did, trainer Bob Harper from The Biggest Loser went vegetarian for his health—and his cholesterol count dropped 100 points.

You heard that right: 100 points!

Over at Ecorazzi, they're sayin' Bob went vegetarian after reading Skinny Bitch. I really should start lending my copy to more people.

Written by Amanda Schinke