I confess to being unaware of Paris Hilton's oeuvre. But I was struck by this sentence in an account of her return to prison, and the reasons why she had been let out in the first place:

Friends said that she was not eating or sleeping in jail, and that she had been crying a lot. Some reports suggested that this was because she had not been allowed to wax or use moisturiser.

Ah, that explains it. Insomnia, tearfulness and an inability to moisturise are surely, in anyone's book, clear gounds for early release from jail.