How to talk to my friend about her hygiene?

..Okay, my super close friend smells and I want to barf. She likes to hug me, and since im kinda short, im like into her armpit, so I have to tilt my head up for air..
And her shoes... EVERYONE talks about it and how her shoes smell and I heard people say 'drop hints' to her, but me and my friends do. My friend always goes 'Hey Emma smell my shoes and see if they smell' or 'My teeth are so yellow' One time my friend was like 'Hey (name) your shoes smell..just joking' and she just laughed and jokingly said I know.. We joke a lot so she dont take us seriously I dont think... Before the summer her teeth were only slightly discolored and now when I finally saw her after the summer, you could easily tell the have worsened.. There are like brown spots and its gross.. I dont sleep over there anymore but.. I think she only brushed her teeth when people were there to make it seem like she did.. and on MSN her name would be like '..shower' and maybe that was there to make it SEEM like she showered.. AND her hair is greasy everyday. So my question is.. How can I tell her she smells in general and her shoes smell and her teeth are of poor quality?

say hey I dont mean to be rude but recently you havent been smelling very nice, I dunno how often you wash, im sure you do it every day, but I thought I should tell you because im your friend and I dont want you 2 get upset if people start saying stuff about how you smell and how bad your teeth are

try to ask this girl , how does she think she is ( nice or ...)
than explain her that its not a joke and you wreally think that she should take more care of herself.

Dear mxah,
I've always wonder why we call ourselves friends yet we allow our 'friends' to be embarrassed? A true friend is honest and open. You can start by saying I know this may embarrass you but I'm telling you this because friends take care of each other and I value you as my very best friend and I care. Then go on to explain what is going on. One day, perhaps not right then but one day she will remember you for this and will always be grateful.
Sue...good luck

maybe try to tell her when you to are alone and talknig so this way if she turns to freak out or something she shouldernt get as upset

Why don't you like buy your friend a nice bubble bath set, and kinda like suggest a girly night, like a makeover. you and your friends could take makeup, and Pearl drops thats like £1 and its brilliant tooth whitener, and stuff like perfume.
A makeover sounds abit daft, but if you just say to her about her hygiene she may get upset.
Thats why am suggesting this girly night, your friend mya just benefit in the sence that she may begin to look after herself more. When she realizes how great she can look.

take for a pampering session. either that, or just be honest with her. but make sure she knows you still value her as a friend