This was a tough one, but the best rooms pulled off the color combo by going sleek and modern rather than too teeny-boppers. You can see all of the pink and gray Casa Cravings here, as well as the 10 great lists the users created. (TeamSugar has a great tutorial on listmaking if you're not sure how.) Here are a few of my favorites.
Look #1, designed by CocoChic, who says her room is all about glamor: "I kept the palette simple with gray, pink, black, and white. The mirrored tray and Victoria ghost chair add a sense of an old dressing room. The rug is made of FLOR tiles so it can be rearranged at the drop of a hat. Finally, the lamps, bedside tables, and dresser accessories give off a little sparkle."
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Look #2, designed by Ejmcmis, who went for a mix of glam and mod, with understated silver curtains, a sophisticated but funky pink chandelier, and black wooden furniture.
Look #3, designed by Jackieos, who calls her bedroom "Chic and timeless. Youthful but classic. Fun yet glamorous. The pink and gray wallpaper sets the tone for all the other hot pinks and grays: silk drapes, bedding, mirrored furniture, 'ghost' style accessories, and a fun rainbow-dipped jeweled chandelier."