DD made hers last year, after her brothers, so I have seen lots of outfits!
The 'no gloves' is probably because they are a faff to look after, as are bags and other dangly bits and pieces.
Silver shoes would be ok, but white is more popular. A closed-toe rather than sandals looks better, with tights or white ankle socks. There are lots of white satin pumps and mary-janes on ebay, or google bridesmaids shoes.
Very few have the full veil, which does look old-fashioned, but several had a small veil at back of the head (attached with a comb) which looks pretty. Plenty of delicate silver tiaras, or flower clips.
DD had an up-do (quite bridal-looking large bun with diamantes around the base) and she looked lovely, but not over-the-top. She had a small veil fixed underneath the bun - a plain one from Monsoon - her choice.
I'd say that with a bob, keep it simple with a pretty tiara, as a veil might swamp her hair.
Bare shoulders are a no-no here. Most girls had a bolero to match the dress or a white cardi, long- or short-sleeved.