No, this isn't a flashback photo from 2005.

Jessica Simpson stepped out in Los Cabos, Mexico wearing a teeny bikini, cut-off shorts and a straw hat on Wednesday, looking a lot like she did when she played Daisy Duke in "Dukes of Hazzard."

The mother-of-two is on vacation with gal pals CaCee Cobb and stylist Nicole Chavez, and in addition to her sexy bikini, Simpson also posed in another swimsuit that read: "Dangerous Curves Ahead."

WATCH: Jessica Simpson Shares a Snapshot of Her Sexy Valentine's Day Bikini

"Enough said," the 35-year-old star captioned a pic of herself wearing the silly suit.

The girls jetted off to Mexico to celebrate Chavez's 40th birthday. "Forty is the new 20!" Simpson said of her friend, adding the hashtag #HotMama. "I love this woman."

No doubt Simpson is looking better than ever, and she recently revealed to InStyle her exercise regimen. 

"I work out five days a week: three days with a trainer, doing a mix of strength training and cardio, and then I do cardio on my own the other two days," she said. "Somehow I make it work, but I've slowed down since my wedding."

WATCH: Jessica Simpson Flashes Her Rock Hard Abs in Tight-Fitting Crop Top and Polka Dot Pants

When ET spoke to Simpson, she admitted that she doesn't follow a strict diet. "I think being a mom is enough of a diet," she quipped. "You have to run around chasing your kids, but I do eat a lot of their corn dogs, so I have to get on the treadmill a lot to watch my TV shows."