I'm looking for somewhere in Bangkok that offers a Lounge Suit hire service. Does anyone know or have any experiences of such a place?

Yes - I know it's cheap to get suits made (I have a number already) but I need something formal for a one-off event and would rather hire for 24-hours if possible.

Thanks in advance for your assistance.

A lounge suit is an old-fashioned term for an ordinary business suit. I doubt you'd find anywhere to rent you one. A tuxedo (US) or semi-formal dinner jacket (UK) is probably what you're after. However, I've never seen any formal-wear rental places in Bangkok.