How TRISHA kicked up her sex life with hubby GARTH BROOKS!

COUNTRY star Trisha Yearwood has shed 40 pounds in 18 months – and kicked up her sex life with hubby Garth Brooks!

Now a svelte 130 pounds, Trisha, 49, and her 52-year-old hubby of eight years are acting like teenagers in love, said an insider.

“Garth and Trisha walk around holding hands and kissing, and she’s always climbing up on his lap to give him a hug – something she never did when she weighed 170,” said the source. “It really amped up their sex life and saved their marriage. Trisha feels sexier too.

“She used to wear baggy shirts and ‘mom’ jeans most of the time. But now she’s decked out in tight dresses, high-heeled shoes and skinny jeans.”

A fan of rich Southern dishes, Georgia-born Trisha wrote “Home Cooking with Trisha Yearwood” with her mother Gwen.

In 2010, the Physicians Committee for Responsible Medicine blasted it as one of the five worst cookbooks ever due to the high fat and cholesterol content of its recipes.

Trisha lost her mother to breast cancer in October 2011, and it prompted her to consider the link between diet and health, said the source.

“She decided to trade her favorite cheesecake, burgers and macaroni and cheese for a daily 1,200-calorie diet of fish, chicken and vegetables,” said the source.

“Trisha also cut back on sugar and started working out. Since then, she’s dropped 40 pounds.”

With 5-FOOT-9 Trisha counting calories, Garth also lost 25 pounds from his once 265-pound frame, said the source. Now Grammy-winner Trisha has also scaled down the fat and calorie content of dishes on her Food Network show, “Trisha’s Southern Kitchen,” said the source.

“Trisha used to showcase fattening comfort foods, gooey desserts, cookies and candy. But she’s making her recipes healthier.”

The singer turns 50 in September, “and a year ago she said she was dreading it,” said the source.

“But now Trisha says ‘age is only a number,’ and she’s planning a huge birthday bash.”