Teresa Giudice is so skinny! The Real Housewives of New Jersey star has been showing off her weight loss on social media. And, we have to say, we're impressed.

Teresa recently posed in a tiny teal bikini with yellow gemstones. And she captioned the Instagram picture, “Loving the Sun #yoga #vitamind #namaste.”

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Teresa Guidice Weight Loss Teresa Giudice looked curvier on 'RHONJ' in 2014.

And the RHONJ star has revealed some of her diet and exercise secrets. She explained that she worked out all the time and kept a very healthy, clean diet during her nearly year-long stay at the Danbury Federal Correction Facility.

“All the prisons have the same menu,” she said. “In the morning, we had either oatmeal or bran cereal. On Fridays they would make French toast and pancakes.” And for lunch and dinner there were “hamburgers, hot dogs, pizza, chicken salad, chicken fajitas, tacos, tofu, stir-fried vegetables, and can’t forget the rice and beans.”

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Teresa said that she started dropping some meat from her diet. She was already cutting down on carbs, as well, and she eliminated them entirely because some of the kitchen workers found maggots in the rice.

Teresa would also work out three times a day while in jail. She would do yoga in the morning then walk or run on the track. She would also lift weights and work out with a fitness DVD like Jillian Michaels' or Bob Harper's. She would even participate in competitions against other inmates.

Teresa Guidice Weight Loss Teresa Giudice has been keeping a healthy diet and fitness regimen.

By the time Teresa was released from prison, she had dropped to a size two. And her husband Joe loves it. “He likes my body,” she said. “I just lost my ass. My husband says, ‘You gotta do squats.’”

But the diet and fitness regimen didn’t end when she returned home. Teresa’s been posting photos of herself working out and cooking healthy meals.

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And like his wife, Joe is also losing weight while in prison. “He’s lost over 30 pounds … he looks amazing,” Teresa previously told Extra. “I can’t wait for him to come home. I say, ‘You’re not coming home until you have abs.’”

What do you think of Teresa Giudice’s weight loss? Let us know your take in the comments section below!