This colorful hat was knit by Christina the yarn she used is Hobby Lobby Sweet Delight Baby & she got the pattern from her LYS Yarn Explosion..
These two hats were knit by Debbie. The pink one is made from Caron Simply Soft & the blue one is made from Red Heart Soft Baby Steps . You can find the pattern for the pink hat here & the pattern for the blue hat here.
Christina also knitting up this pink & white hat using Bernat Softee Baby . You can find the pattern here.