Ex-first daughter slams Lindsay

Lindsay Lohan

Patti Davis, a recovering addict, is angry with Lindsay Lohan, who is going to an exclusive Malibu rehab. "It makes me angry when I see how rehab can be abused as nothing more than a slick PR move," Ronald and Nancy Reagan's daughter writes in Newsweek.

Davis, 54, who says she had to deal with her addiction to speed and cocaine on her own, said: "I plunged willingly, desperately, into addiction at the pliable age of 15."