Don't you just love Jodie's cool wordart - I'm not sure it really applies to siblings, but why not....!
Credits:
Blended Paper, WordArt & Swirl: Jodie McNally, Kate Hadfield & Jacque Larsen Collab, the-lilypad.com, Something New (recoloured)
Photo Treatment: Kelsey Smith Presets, kelseysmith.typepad.com, Dream
Font: Handwriting - Dakota