You know what kind of pants usually goes well for us TG girls, that are often fairly tall, with thin hips ? Sarouel! I got one of those, and they make my hips look about as large as my shoulders and give me a hourglass figure. They are purrfect and here in Brazil they are in. Also, if they look a bit too much for you, they come in jeans as well which are less attention demanding. They also have a shortening effect too, and though they don't go very well with boots, I find are excellent for heels or flats.
(https://www.susans.org/proxy.php?request=http%3A%2F%2F3.bp.blogspot.com%2F_dOTymlJ8xHA%2FTQ2_EjQqr8I%2FAAAAAAAAAEw%2F_gyvFpc2kFM%2Fs320%2F4794534_186176t.jpg&hash=aa0f8c736f2484bc6dcc4927e25932a6b77807ce)
(https://www.susans.org/proxy.php?request=http%3A%2F%2Fmarinadobairro.files.wordpress.com%2F2011%2F03%2Flook-2fb-inverno-2009.jpg&hash=7a47cbef49f1b3a90465dd82933de78a31c21dbe)