i wouldn't advise it specially if they are older bridesmaids because you don't want them to either out do the bride or to blend in with her, where as you want the bride and bridesmaids to stand out in different ways. However, if the bridesmaid is a small child then ivory looks fine as long as you put a band or sash around the middle or have the same colour schemed accessories then it should look ok.
The aunt of the bride can wear absolutely anything she wants to the wedding up to and including her own bridal gown provided that the possibility of alienating every single member of her family forever doesn't bother her.
If everyone the aunt cares about offending is okay with it, then why not?
You can wear whatever color you want, but white is the traditional color and it may be hard to find a wedding dress that isn't white. The grooms always look better in black. Don't let the bridesmaids look better than you.
MOBs and MOGs generally wear an outfit that they like, and then corsages are worn by them and the bridesmaids, the corsages matching the men's boutonnieres. The good MOBs and MOGs are careful to not wear colors that clash with the bridesmaids dresses. No one, but NO . . . ONE should dress up and make up in competition to the bride, who should be the "prettiest of them all".
Never. The only person in ivory should be the bride. It is inappropriate for a person at a wedding, mother or not, to wear the same color as the bride.
Junior Bridesmaids can wear the same colors as your adult bridesmaids. In fact, many designers are offering a junior bridesmaid version of their regualr bridesmaids dresses. One designer, Alexia Designs has a very beautiful selection of junior bridesmaids dresses which match their bridesmaids dresses.
The best time to wear ivory shoes is when the weather is dry. One should always wear the ivory shoes on hard ground to ensure that dirty marks do not transfer and that the heels do not sink in to surfaces such as dirt and grass.
Always keep in mind that the bride and her maid of honor and bridesmaids are the center of attention and should be the ones that stand out. If the dress is a medium cream to tan color this is acceptable, but it would be better to go with another color of pastel than ivory or cream.
The bridesmaids should not wear white, as that is reserved for the bride. Pastel tones might be nice if you are on the beach. Nothing distractingly bright mainly.
the mother of the bride should wear red because it color coordinates well.
a white dress and white shoes with a red bow around the dress
It depends on what colors you have chosen for your wedding (usually people choose two wedding colors). Since your bridesmaids are wearing red, I will assume that red is one color you have chosen for your wedding. What is the other color? Have your maid of honor wear your other wedding color.Another suggestion is your maid of honor can wear pink.
a lighter orange or a darker orange depending on skin colour
both with silk it will look beautiful