(Cover) - EN Star Style - Paris Hilton is looking better than ever after waving goodbye to the Hollywood party scene.

The hotel heiress used to be well-known for her wild antics with showbiz pals throughout her 20s, but as her 30th birthday approaches this month, she has curbed her old partying habits.

The blonde beauty has gained weight since cutting out her alcohol-fuelled nights out, with her dress size rising from a tiny UK size 6 to a more healthy size 10-12.

Paris has put on [14 pounds] in the past month since going on a health kick and hitting the gym hard, a source close to the star told more! magazine.

The celebrity owes her new body to a mix of healthy eating combined with a range of exercises. Paris who has always sported a slender frame has worked hard to maintain her new muscles.

Paris does weight training, swims and cycles, the source said. And shes got her appetite back. (C) Cover Media