NEED HELP WITH SONG TITLE

NEED HELP WITH SONG TITLE

There is a particular song of Avril's that I would like to purchase
for my I-Phone but don't know the title of it only a few words
of the song itself.

"You're in you're out, you're up you're down, you change your
mind like a girl changes clothes"

Can any help me with the title of this song please. Thanks

Replies for this Forum Topic

Thank you so much, you were correct. It is Katy Perry.
I was given incorrect information yesterday by someone
that thought that they really knew their music.

It's strange, the lyrics you give make me think the song by Katy Perry "Hot N Cold" Smile