Rude girl group member who's a heavy smoker
A girl group member was in Thailand for a shoot. She smoked at a hotel and made the fire alarm go off. It caused a fuss but she didn't apologize. She was late to the shoot on the next day. However, the profits increased with her modelling and she renewed her contract.
She's a very popular idol. She curses at her manager if they don't buy the coffee she wants.
(OP also mentions that searching 'Thailand CF shoot' results in a few idols. One of them, who's known for a great back profile, was already caught with smoking pictures.)