I want to make an autograph book for niece...what size? HELP!

[disneychic]

My DH and I will be bringing our nieces to WDW in Feb and I would like to make them custom autograph books but I'm not sure what size they should be?? I see on artscow that there are 5X7 or 8X8 but I wasn't sure what is the standard size for autograph books? Any help or advice would be greatly appreciated

 

[Que_Sarah_Sarah]

Pick something that will fit comfortably in your bag/pockets. Other than that, it is really a personal preference thing. Nothing smaller than 5x7, I should think, just so characters have enough room to sign.