JESSICA Simpson hasn’t lost her appetite!

The singer, actress and reality TV star — who’s engaged to former footballer Eric Johnson — recently lunched with three of her girlfriends at the Four Seasons Hotel in Beverly Hills, and reportedly finished sizable amounts of her pals’ leftovers!

“You’re not going to eat that?” Jessica asked, according to American tabloid the National Enquirer. Assured they were not, Simpson ordered the waiter to bag up the food for her to take home.

“I can’t stand leaving a great meal behind…even if it’s not mine,” she giggled. “I’ll eat it later.”

Recent reports claimed Jessica is taking vegan cooking classes to impress her future husband Eric.

“Jessica is determined to be more of a domestic goddess this time in regards to her marriage,” a source said.

“She hardly ever prepared meals when she and ex-hubby Nick Lachey were together.”