The Siamese Cat Song (Haylie Duff & Hilary Duff)
Siamese Cat Song (Haylie Duff, Hilary Duff)
A Cinderella Story movie trailer (Hilary Duff & Haylie Duff)
Material Girls (Hilary Duff & Haylie Duff)
Our Lips Are Sealed = アワ・リップス・アー・シールド (Hilary Duff & Haylie Duff)
Our Lips Are Sealed Video (Hilary Duff & Haylie Duff)
Our Lips Are Sealed (Hilary Duff & Haylie Duff)
The Siamese Cat Song (Hilary Duff & Haylie Duff)
Trailer to a Cinderella Story (Hilary Duff & Haylie Duff)
Our Lips Are Sealed (Hilary Duff feat. Haylie Duff)
Same Old Christmas (Hilary Duff feat. Haylie Duff)
The Siamese Cat Song (Hilary Duff feat. Haylie Duff)
Our Lips Are Sealed (Hilary Duff, Haylie Duff)
The Siamese Cat Song (Hilary Duff, Haylie Duff)
Babysitting Is a Bum Deal (Stewie & Haylie Duff)