What should I do about my friend?

[Daisy]

I have a friend I'll call her "Jenny" and Jenny is quite rich and has a good life but she is always trying to get attention from people. She claims to be self conscious of her self and always goes on about how self conscious she is yet the teachers at school see her to be confident and I know for a fact she isn't self conscious because of the pictures she takes and puts on facebook and she was walking around in very revealing clothes she says shes self conscious about everything about her when it's obvious she isn't. She always goes on about problems she has at home which I don't mind because I would rather help her than let her suffer on her own but she then uses this as an excuse to get attention which it kind of hurts my feeling because I also have problems allot more serious than hers but I never say anything because I would rather help Jenny than just go on about my problems. She also brags about being rich but in a pathetic way and it really annoys me because she has a perfect life and her parents give her loads of attention but yet she still wants more and its getting to the point where its ridiculous. It probably sounds like I'm jealous but I'm not it's just that she always goes on about her self and saying how ugly she is but I'm finding it VERY annoying now because there isn't much I can say. As soon as someone else has a problem she just tries to make it about herself like I have insomnia and I can't sleep but about 2 weeks after I told her this she complains saying she couldn't get to sleep when I know it's because she's up texting her bf. What can I do because we have a small friendship group (there's 4 of us) she gets allot more attention than the rest of us so it's not like we leave her out or anything and she says things purposely so we will tell her the opposite like she isn't ugly shes pretty which she really is pretty. What would you do if you had a friend like this than craves attention all the time.