Hayate the Combat Butler Vol. 9 (manga)

Hayate owes a debt of gratitude to Hinagiku--the cute, sporty, and all around perfect-in-every-conceivable-way student body president--and as her March 3rd birthday draws near, the bankrupt butler tries hard to come up with an appropriate present. But with final exams on the horizon, will he have time to prepare Hinagiku a heartfelt gift and pass his classes? Later, an ancient curse makes Hayate appear as if he's wearing women's clothing--and if it isn't broken, Hayate will be doomed to live out the rest of his days in drag! But, seeing as he looks really cute in a maid's uniform, maybe that isn't a bad thing...