We know you can write a whole book about why you love her, but if you need something short and sweet for her birthday card, look no further than these best birthday wishes for your sister.

There are straightforward options like, “To my dearest mom, on your special day: Happy birthday!” and “You’re simply the best ...

There are straightforward options like, “To my dearest mom, on your special day: Happy birthday!” and “You’re simply the best.” Other thoughtful messages might extend a little longer, such as, “The ...