AceShowbiz -

Paris Hilton answering her fans' letter. It's not happen everyday. In fact, the heiress does do it whilst in prison.

Has nothing to do behind bars, Paris makes use most of her free time there reaching out to her fans by answering their letter. In one of her letters to an unidentified fan obtained by E! Online the socialite wrote, "I read your letter and just wanted to thank you for your kind words of love and support. The fact that you took time out of your day to write me truly means the world. Especially at such a difficult and scary time in my life."

Paris went on saying in the letter, "But I am being strong and trying to make the best out of the situation. And the letters I'm receiving really do put a smile on my face as I sit here in my cell, sad and alone. Again, thank you so much and may God bless you and your family."

In related news, words got around that Paris has sparked anorexia concerns after losing over 5lbs in a week and appearing "weak and lethargic" since she was transferred back to California's Century Regional Detention Center last week.

"After she was transferred back, Paris refused to eat. Staff became worried as she seems very thin with her bones poking out. She was also very weak and lethargic," a source told Britain's The Sun newspaper. "They threatened to put her on an intravenous drip to rehydrate her and give her some nourishment unless she started eating. She has since managed to get a little food down, but doctors are closely monitoring her."