Who is prettier? I'm making a book and I just need advice so, is Aly or Aj prettier?

Pictures of them below.

Aj- http://ia.media-imdb.com/images/M/MV5BMjEyNTU2MTc4...

Aly- http://cdn04.cdn.justjaredjr.com/wp-content/upload...

Together- http://images.fanpop.com/images/image_uploads/Aly-... In this picture Aly is the one leaning on the guitar case. While Aj is standing up.