What are some good movies like mean girls?

movies like twilight are a little to dark and dull for me. i like movies that are sweet and colourful like mean girls or confessions of a shopaholic or the clique.

p.s. yeah i asked this before
Update: p.s. happy endings!!!

(a walk to remeber is too sad:'( )

thanks so much :) i'll give everyone a thumbs up:)
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