Sexy socialite PARIS HILTON's debut book has gone straight to the top of the best-sellers list after it was launched in New York yesterday.

The hotel heiress goes through 23 rules covering 'How To Be An Heiress' in the book CONFESSIONS OF AN HEIRESS: A TONGUE-IN-CHIC PEEK BEHIND THE POSE.

In the book she writes, 'I take my dog TINKERBELL seriously. I take my work seriously. But I don't take myself all that seriously. Never be too easy. If you're too easy, a guy knows he has you.

'It doesn't hurt to act rich as well as hot. I've found it to be a fairly unbeatable combination. Who's a guy going to go for, a girl who's gorgeous or a girl who's gorgeous and rich?'

Hilton's SIMPLE LIFE reality TV co-star NICOLE RICHIE has followed in her footsteps by penning a book about her drink and drug problems, to help teenagers cope with adolescence.