what should i get my gf for her birthday jewelry or under ware?

get her the bra and matching panties and then smile cutely at her

if my bf got me something like that i would be all over him

Underclothes are quite private and yes, size does not guarantee good fit. If you really want to get her lingerie type gifts, try a Victoria's Secret gift card where she can go try items on and get something she really likes. Jewelry is a gift that can be cherished for a very long time and can be shown off to others to share in the happiness of a gift. I would suggest maybe trying to spend a little more money on jewelry that is not cheap, won't have bad reactions to her skin, or fall apart and lost easily. A decent quality jewelry item doesn't need to be overly expensive. It will reflect on your level of class, make you look good to her and others, and will be a gift that will endure (try to go relatively simple so it will go well with most things). A lot of quality underwear (bras and panties) will not be cheap, so set your jewelry budget along the same amount if you can. Depending on your age, length of relationship, her privacy, reconsider if lingerie is appropriate. If it is, you may want to consider a sexy teddy, slip, hosiery, etc when sizes are more easier to gauge.

I think a necklace would be a good idea. Getting her a bra and panties might send the signal that you're going to want to be seeing them again (as in while they're on her). And even if they are her size, they might not fit the right way and she would be stuck with a bra and panties she doesn't use and you would be stuck giving a useless gift. You can't go wrong with necklaces

Well I'm sorry but buying a girl underwear just seems sleazy and it may come off as you want to get in her pants...which may be true...however, if it were me I would much rather jewelry.

i would go with the earrings and necklace, they'll more personal and something she can show others. if you want a treat too why don't you get her a gift car for some underwear.

I would go for the jewelery. I don't know how much I'd like my boyfriend buying me underwear. Just imagine...your girlfriend gets home and her mom asks "So sweetheart, what did BobbyJohn get you?" "OH mom! He got me this beautiful bra and panty set!" Your girlfriend's mom would hate you.

underware is too personal... jewelry is a tad overdone think of something wonderful to do together like a slow dance class or something like that.

Get a heart shaped locket and put a little note in it for her :)

One of my friend's bf gave her a locket shaped like a heart and she never takes it off :)

Ring with a stone ....

A bad Burrito could ruin the undies ... rings last !

Go for the lingerie.