Amanda BynesAmanda Bynes shocked her fans over the weekend by tweeting her retirement from acting. The 24-year-old starred in light but charming films like 'What A Girl Wants,' 'Sydney White' and 'She's The Man,' and appeared in the the ensemble hit 'Hairspray.'

But the actress told the world bluntly on Saturday: "I don't love acting anymore so I've stopped doing it."

Her measured remarks about leaving the business seem to put Bynes in a genus of the Hollywood animal that is not rare, but under-studied by scientists: the former teen-star who makes intelligent choices about her adult life, rather than going out in a blaze of drugs and parties.