She kinda reminds me a bit of Vanellope from Wreck-It Ralph...must be the color scheme. She is really cute, though. X3
The anatomy is a little weird around her tummy area, but that might just be the perspective of the shot...the pose itself looks good to me, natural and plenty babyish. And, of course, who can resist a big shot of that soft, cushy diaper? You have a knack for drawing 'em so comfy-looking I wanna try one on from your drawings.