Birthday Cupcake Wishes Lines For Sister: Your sister may not be the first one to come to mind but her prominence is more subtle. No matter how much you fight with each other, they would always be there by your side protecting and taking care of you. There’s no denying that siblings have a special bond. And what we all need to make that bond stronger and stronger is just celebration. A birthday is the perfect occasion to take the opportunity to spread some love and cheer. A birthday is incomplete without wishing her and if you fed up with usual birthday lines then you may pick our beautiful collection of cute cupcake birthday wishes that will touch your sister’s heart.