Difficult 14 year old

Throwaway because I'm worried my daughter might know my reddit username. I am a single mom (divorced) with an amazing 14 year old girl. I would say I am a moderately strict mom, I keep tabs on her private Instagram profile and keep tabs on her Facebook. My daughter follows and idolizes certain Fashion/lifestyle bloggers and Instagram models and seems to want to emulate their life and pictures. She truly believes that is how people life and wants to have an extravagant life. She is obsessed with being very skinny and owning the most current designer items which we cannot afford. She wants to start her own fashion blog and wants to have a public Instagram profile. This has led to so many tantrums and she seems very unhappy with her life. I have no idea how to deal with this. Last month her dad and I have spent over $800 on new clothes and shoes just to pacify her. I feel like a failed mother, I want to support my daughters interests but I am not okay with my 14 year old putting her pictures on a public blog or trying to lose weight and we certainly can't afford to buy as many new clothes as she wants. I am tired of dealing with this and I have no idea how to make my daughter feel better about herself. The yelling and screaming and bad behavior has pushed me to my limits. She is refusing to see a therapist. Any advice is appreciated. via /r/Parenting http://ift.tt/29eFeIa