When are French nails too long?
What is too long when it comes to French nails? If you look at Britney Spears French nails and how she holds the camera, I would say she is not comfortable with the length of her nails. Yet she doesn't have to type, so she can adjust the length of her nails to her needs.
Long French nails on the little finger
Here in Asia, lots of people keep the nail of their little finger much longer than the rest of their nails. The idea of this extra long nail I rather not disclose here.
But this long nail doesn't interfere with your daily handling of objects. And: it is an ideal nail to do some extra art of French manicure. Look at the little, cute butterfly on the French manicured little finger nail. 
