When it comes to updo hairstyles, there are several ways of styling the hair including the two popular ones here. The first hairstyle is a looser look with more volume while the second is a swept, sleek one.
The first hairstyle is better for many facial shapes as it adds more distraction of facial features. The second offers a different appeal and brings out more from facial features like the eyes, lips and nose.
Both are good selections and it is pretty much up to personal choice. Hope this helps prom goers in deciding on some hairstyle choices.