HOW JESSICA SIMPSON LOST THREE DRESS SIZES IN FOUR MONTHS!

HOW JESSICA SIMPSON LOST THREE DRESS SIZES IN FOUR MONTHS!

When Jessica Simpson arrived at the Operation Smile gala in a curve-hugging gown from Carolina Herrera, onlookers immediately noted her newly svelte shape. “She looked really fit!” an eyewitness at the May 6 event tells In Touch. The star’s fluctuating weight has been heavily scrutinized over the years, but thanks to her new trainer, Danny Musico, Jessica is finally back in control. “She’s getting leaner and told me she went down three dress sizes,” Musico — who also trains Leonardo DiCaprio, Justin Bieber and even Jessica’s dad, Joe Simpson — tells In Touch. “She’s pushing herself to new levels,” explains the former professional boxer. Jessica burns calories through High Definition Training, which combines boxing, cardio and weights. “She’ll run for three minutes as fast as she can, then rest for 30 seconds, then box for three minutes and so on,” says Musico. “It’s a 60-minute, interval-based workout.” Jessica tells In Touch her favorite part is punching. “It gets a lot of aggression out!” she says.

Though they try to meet about four times a week, Musico reveals Jessica’s biggest challenge is her busy schedule. “With her clothing line and getting ready for another season of The Price of Beauty, it’s hard to find the time,” Musico — spokesperson for The Solution supplements — explains. “But when she’s at the gym, she always gives 100 percent.”