The hotel heiress says the fitness regime has helped her to maintain her more toned figure.
Hilton, 30, told British Now magazine: 'I've been working out and eating healthier and it feels great.
'I've been doing Pilates to help keep my body toned and cardio in the gym.
'I'm also eating a lean diet with lots of organic fruits, veggies and vitamin juices. I have so much energy and feel amazing.'
Hilton, who is rumoured to be dating The Hangover director Todd Phillips since splitting from Cy Waits in June, feels very happy with her life at the moment.
She added: 'I'm feeling really great right now and very happy.
'I'm having just an amazing summer.'