It seems that the hottest stars always seem to be so fickle when it comes to their hair. From blonde to brunette to red, the evolution of their locks is always changing.

Since some of these celebs just can’t seem to make up their mind – and should probably step away from the hair dye every now and then – we’re offering up advice on which hue suits them the best!

Check out what colors we picked after the jump!

One of the best parts of being a girl is being able tochange your hair to suit your mood, right? Well, that's exactly what DemiLovato and Miley Cyrus did this week! Both 19-year-olds took to Twitter on Saturdayto show off their new looks. Their fan response has been overwhelmingly positive, but do you agree that these are some of their best looks yet? Check out the photos and decide for yourself!

To dye or not to dye? 

That was the big question recently posed by Lauren Conrad on her blog.

With the help of her faithful followers, Lauren decided to take the plunge and dye her long locks ... Click on to see how it all turned out!