Much like Penelope Cruz, I've got a sister who's a total knockout. She's taller, thinner, her smile is brighter and she's naturally blonde. I've always loved having such a pretty role model in my life, but I'm no saint.

Things are good now, but there was definitely a time when I was a little bit jealous that she never had to dye her roots. I'd buy cooler hair scrunchies and better lip gloss than her just to make myself feel good. What about you? Are you competitive with your siblings when it comes to your looks?