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.

The New Small Person

Age: 4-8

In her famous series, Lauren Child’s Charlie is big brother extraordinaire to quirky little sister Lola. Here, Child branches out with a stand-alone picture book, also about siblings, also featuring her deliciously chatty prose and collage-like illustrations. Elmore Green hates everything about “the new small person,” until the night he has a bad dream and realizes that little brothers have their uses. Funny, real, and tender.

Available at barnesandnoble.com, $14.06.

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

— Emma Bland Smith