Amanda Righetti, Mentalist Star, Reveals Post-Baby Bikini Body: Pic

Back to her post-baby body! The Mentalist star Amanda Righetti has dropped the baby weight and is showing off her stunning curves after she and her producer husband Jordan Alan welcomed their son Knox Addison in January 2013. The first-time mom reveals to Us Weekly how she bounced back and what milestones she's been enjoying with her little bundle of joy.

"When I found out I was pregnant I had a whole plan, and then I had to throw it all out the window," the 30-year-old actress laughed about getting into a workout routine. "I tried to do yoga about 2-3 times a week, and then I would meet with my trainer maybe once or twice a week," she explained. Part of her daily diet to get back in shape? The star did a food delivery by The Moyer Method, created by one of her three trainers, Steve Moyer. "I couldn't work out for the first 6-8 weeks, so my diet was really important," she admitted. "As I started working out he was able to change the plan a little bit and then once I got off the breast feeding he continued to change the plan and to really customize it to my needs."

The new mom kept up with her exercising until about 7 months, but decided to stop after having trouble breathing. "It was really difficult for me," the exercise guru explained. "I think the acceptance phase didn't really come for me until like 6 months when I really started to settle into the pregnancy a little bit, but it was really uncomfortable."

But after giving in to some cravings (like pickles and SpaghettiOs!) the former O.C. star went into full workout mode after the birth of her baby boy. After returning to her hit show 6-8 weeks after giving birth (in mid-February, early March), the actress began to see progress in June.

"Once we had broke for hiatus in the beginning of April, my full-time job became going to the gym," she said. "I was in the gym probably like 5-6 days out of the week for those three months." During that time, Righetti would switch up between cardio, elliptical, biking, running and resistance and weight training. After pushing through the last 10 pounds, the CBS star proudly transitioned back to her pre-baby weight in August, just 7 months after giving birth.

And with a new look, comes new changes for baby Knox too! "He has two bottom teeth now. He's crawling around like a mad man and pulling himself to stand," she gushed about her son's milestones. "He's a little monkey and likes to climb all over the couch. Gosh, he's just so much fun."

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Righetti and her husband — who married in April 2006 — have also taught him one special activity. "I am teaching him sign language. It's really cool," she revealed. "He knows the sign for "eat" or "more." So he responds to them but he is not signing back yet."

The Mentalist returns for Season 6 Sunday, Sept. 29 at 10 p.m. EST on CBS.

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