I have a sister of 15 years of age who keeps on comparing herself with others. She feels she is not that beautiful though I know that she is. I do tell her but she says I’m fooling her. She keeps on nagging me to buy her new clothes in the same style that her friends wear. My sister is becoming as headache for me I don’t know what to do. Help me to tackle this problem.

This is unavoidable girls of her age do this. Take it in the positive sense maybe she’ll change herself for her own good. It is not important that she adopts all the negative things. Just keep a close watch on her and keep on guiding her.

let her explore some styles, but let her know that being a wannabe is not a real cool thing to want to be rofl
she's trying to decide what kind of style she likes i suppose and there's nothing wrong about that. and this is the age where she wants to feel accepted by her peers and she may feel that wearing the same kind of clothes as her friends will make her look cool and 'in'.
maybe it'd be a good idea to let her know that true friends aren't decided according to 'attire' but rather for the inner self.
on the other hand, it wouldn't be right to suppress her want to explore some different styles

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Would You Love Me More If I Were Any More... Like You?

The feeling of inferiority is not good. You need to explain to her that no one is perfect and for anyone to be good in anything must practice or learn a lot. So, there is no harm if she is not beautiful she can now become one. it is never late in life.

calling this inferiority might be a bit too hard on this 15 year old girl. i mean she's still a teenager trying to find her approval by friends and so on. she's trying to figure out her self-image...

She’s like any other girls at her age. Maybe you should give her an allowance and she saves so that she can buy what she wants. Giving her everything she wants would only make her spoilt and she would not know how to control herself. Make her agree that allowance is the best way to solve this problem.

Clothes do not make the person. If she's having low self esteem, do something to boost it...like a makeover at your local Sephora's they do them for free...or do your alls hair. If she wants "cool" clothes, let her earn them.

Like my mom made me do at that age is...write out what I love about myself like my fav thing is my lips that could be one thing she can list. What she don't like...and write ways to change that. She also made me write or say one good thing about myself a day.

Have her pick a role model like ummm mine is either Eva Longoria or Nicole from the pussycat dolls....they are both beautiful people.

hope that helps!!