It depends on the setting. A dinner out at a fancy restaurant can be enough for some to wear an evening gown while others reserve that outfit for a more fancy occasion such as a wedding. An evening gown can be worn at a formal restaurant but of course would look ridiculous as say, a McDonald's.
She should have chosen better evening wear; her gown was more elegant than she was capable of conveying.
Silverware.
Some styles of Christian Louboutin sandals that are proper to wear with an evening gown include high heel sandals and open toe sandals. Another style that is proper to wear with an evening gown is wedge heel sandals.
evening gown or little black dress
Only if it's a formal wedding.
Most gala dinners require you to wear formal attire. This would include a suit and tie or an evening gown. You would also want to wear fashionable jewelry and shoes to such an affair.
earmuffs earphones evening gown
Black Tie. This means as close to formal as possible. Your best evening gown, if its a female, suit for the man.
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.
* evening gown * espadrilles (type of shoe) * earrings * earmuffs
The majority of beauty pageants require its contestants to wear a suit/business wear for the interview portion, a swimsuit and evening gown.
You'll have to ask your supervisor; no two internships are alike. However, technically speaking, "formal" and "semi-formal" refer to evening wear like a tuxedo or evening gown, so neither of these would be appropriate unless your internship is in an Opera house. At my internship I wear a suit and tie, or a tie and a sport coat.