《美夢成真》（"Breakaway"）是凱莉·克萊森（Kelly Clarkson）演唱的一首歌曲，收錄於她的第二張專輯《Breakaway》中。這首歌也是電影《公主日記2：皇家婚約》的主題曲。以下是《美夢成真》的歌詞：
Breakaway - Kelly Clarkson
Grew up in a small town
And when the rain would fall down
I'd just stare out my window
Dreaming of what could be
And if I'd end up happy
I would pray
Trying hard to reach out
But when I tried to speak out
Felt like no one could hear me
Wanted to belong here
But something felt so wrong here
So I'd pray
I could break away
I'll spread my wings and I'll learn how to fly
I'll do what it takes till I touch the sky
And I'll make a wish, take a chance, make a change
And break away
Out of the darkness and into the sun
But I won't forget all the ones that I love
I'll make a wish, take a chance, make a change
And break away
Wanna feel the warm breeze
Sleep under a palm tree
Feel the rush of the ocean
Get onboard a fast train
Travel on a jet plane, far away
And break away
I'll spread my wings and I'll learn how to fly
I'll do what it takes till I touch the sky
And I'll make a wish, take a chance, make a change
And break away
Out of the darkness and into the sun
But I won't forget all the ones that I love
I'll make a wish, take a chance, make a change
And break away
Buildings with a hundred floors
Swinging around revolving doors
Maybe I don't know where they'll take me
But gotta keep moving on, moving on
Fly away, breakaway
I'll spread my wings and I'll learn how to fly
Though it's not easy to tell you goodbye
I gotta take a risk, take a chance, make a change
And break away
Out of the darkness and into the sun
But I won't forget the place I come from
I gotta take a risk, take a chance, make a change
And break away
Breakaway
Breakaway
這首歌表達了追尋夢想、突破自我、勇敢改變的主題，鼓勵人們走出舒適圈，追尋屬於自己的未來。