There is nothing wrong for the bride to have bridesmaids, someone to help her adorn herself and accompany her.
A female servant can serve her at a specific wage paid by the husband, bride or someone else.
This was widespread in ancient times and is still done in some countries. It is permissible according to sharee‘ah, as stated above. The fuqaha’ stated clearly that if it is the woman's custom to have a servant, then the husband has to bring someone to serve her.
It says in Kashshaaf al-Qinaa‘ (5/463):
If a wife needs someone to serve her because the woman like her does not serve herself because of her high position than she is entitled to have a servant if she does not have any because Allah says in Quran:
“and live with them honourably” [al-Nisa’ 4:19],
But the servant should only be someone for whom it is permissible to look at the wife, either a woman or a relative who is a mahram. End quote.
Having bridesmaids or a servant is not something that belongs to one particular culture or that has to do with religion; rather it a matter of custom or tradition, which varies from one society to another, and may be necessary.
And Allah knows best.