When I was your age (I'm 16) I was about 125 and 5'5".
Although it really depends on different factors, such as how much muscle you have.
Currently working on:
Vault Boy -- Fallout
Benny Gecko: Fallout: New Vegas
Momoko Koigakubo: Ghost Stories (Dub)
Daenerys Targaryen (Dothraki outfit): GoT
Cameron Van Buren -- MPGiS
Malory Archer: Archer
Kamala Khan: Ms. Marvel
Vader Eloha/The Queen: OFF
Princess Suwa: Mascot of the city of Suwa, Japan
Sewing blog: http://www.annikakisskisses.blogspot.com