Even if your little sprouts seem to set up a grudge match over just about everything: choosing the Friday night movie, toppled LEGO towers, and endless hours of she-touched-me-again, in the end, a brother or sister is a built-in best friend. (Who better to help drive Mom crazy or snicker with at Dad’s creative cooking?). Flip through the album to see our picks for best picture and chapter books celebrating the ultimate family bond.

Best Friends for Francis

Age: 4-8

In all the Frances books, the combination of the quirky text and exquisite, vintage-yet-modern line drawings is just perfection. Here, the opinionated badger gets into a battle of wills with her two besties, drawing her little sister, Gloria, into the fray as well.

Available at harpercollins.com, $6.99.

What’s your favorite book about siblings? Share with us in a comment below!

— Emma Bland Smith