Paris Hilton: 'I feel like a grown-up'

Paris Hilton has claimed that she is starting to feel like a "grown-up" with responsibilities.

The 27-year-old socialite, who is currently dating Good Charlotte's Benji Madden, admitted she had been behaving like a teenager for too long.

"I just feel like a grown-up now," she told People. "I think my whole life I was kind of living as a teenager and not really taking responsibility.

"I realise I'm an adult and I'm running a huge company and I'm in love. I have my family. I'm just excited for life."

Hilton, who is currently promoting her new movie Repo! The Genetic Opera, also revealed that she enjoys babysitting Nicole Ritchie's daughter Harlow.

"We just saw her like a week ago," she said. "She had her six-month birthday. I can't believe it. She's getting so big and is so cute. She's laughing now and trying to call which is so sweet. I love babies!"