The Prince's Housekeeper Bride/Prince Incognito: Harlequin comics

Alyssa is selected to be Prince Benito's maid while he is visiting from the neighboring country of Niroli. To Alyssa, the young, beautiful and popular prince is someone beyond her reach and she is too shy to even look him in the eye. But one day, while cleaning the bathroom, Alyssa finds a lipstick that the prince's girlfriend has left behind. The lipstick looks glamorous to the naive Alyssa, who has never even put on makeup before, so she faces the mirror to apply it. But Prince Benito, who has seen everything, suddenly appears…!