We knew that Cody Simpson and his sister Alli were super tight -- she even makes an appearance in this behind-the-scenes footage shot on the set of his latest music video.
But the caption accompanying a photo that the Aussie singer just posted on Instagram makes us think that he might just be the sweetest brother a girl could have.
Cody writes:
"watching my baby sis at her latest photoshoot! alster you have the most advanced and sophisticated sense of style, cool, and class out of anyone your age, or of any age. not only that, you're the most genuine chick I know! I'm a very proud big brother, you're going to go far and do some extraordinary things in the future. you look like a young beachy Bridgette Bardot right now! this is classic and timeless."
Talk about supportive! How nice is that? Isn't Cody the best?