Tonight I have a special evening. How will you style my hair?
Stress 'se-RA-ta'. 'Acconcia' = ac-CON-cia — she/he styles.
Say this when you have an important event and want your hairdresser to suggest an appropriate style. Giving context helps the stylist tailor the look.
'Serata speciale' = special evening. 'Acconciare' = to style/do someone's hair. 'Come mi acconcia?' = how will you style (my hair)? Using the present tense as a future here is natural in Italian.
Ho un appuntamento romantico stasera.
I have a romantic date tonight.
Specifying the event.
Vado a un gala. Voglio qualcosa di elegante.
I'm going to a gala. I want something elegant.
Formal event.
Voglio sembrare glamour senza esagerare.
I want to look glamorous without going over the top.
Describing the desired effect.
Italian women place great importance on 'la cura della persona' (personal grooming) for special occasions. Going to the hairdresser before a special event ('serata importante') is a standard Italian social preparation. The concept of 'fare bella figura' (making a good impression) is deeply embedded in Italian culture.