She's shed 80 pounds on the controversial Keto diet and recently said she was upping her portion size in order to stop losing and maintain her current weight.

But on Wednesday, Jenna Jameson told her Instagram followers she's back to 'cracking down' on her diet ahead of a Mexican vacation.

Alongside a very revealing swimsuit selfie taken with her toddler daughter in the background, the former porn star explained: 'Less than a week from vacation. The packing has begun! I'm also cracking down on my #keto to try to get lean and mean because more than likely I'm going to enjoy a few taco platters while in Mexico!'

Beach body: Jenna Jameson said she's 'cracking down' on her diet ahead of a Mexican vacation as she posted a revealing swimsuit selfie with toddler daughter in the background Wednesday

'I even have begun quick circuit training while Batelli naps. They consist of pliés, lunges, sit ups, pushups and planks,' she added. 

<b>The 44-year-old began the high-fat, low-carb