Second one needs to be warmed up. The color temp in that is ice cold. The dress is a little bright near the center of the frame but that's alright cause the faces and hair look the correct brightness.
I'd warm up #2 and do some noise reduction on both - DO NOT keep the ISO at "ISO Speed Ratings = 640" next time. You were wide open on that 2nd shot, 1/1000 second shutter speed - that's 10 times faster than you needed that shutter to be opened and closed again.
First one also "ISO Speed Ratings = 800" - 1/1600 of a second shutter speed.. Your image quality really suffers with a high ISO and I'd keep it as low as possible and turn it up only as a last resort.
Other than that, I like them. You captured some nice moments here.