"For a casual dinner out in the neighbourhood around Diagon and the Leaky? It might be a little too formal," Remus agreed. He wasn't bothering with new clothes. He'd seen the jeans and shirts muggles were still wearing when they did their initial recon trips and had simply modified his own to match the changes in style. He'd learned long ago that jeans and a shirt worked for most things in the muggle world he would ever have access to. "It suits you, though. Maybe keep the shirt and trousers and see if there's a casual jacket instead of the suit jacket? Or swap the jacket for the waistcoat instead?"
He wasn't really much a fashion expert, though. He knew what he was comfortable in. But, fashion tended to require a better sense of colour than he had. On the other hand, he did know what he liked to look at, too, and Regulus in well fit trousers was debuting fairly high on that list. So, he leaned over to speak lowly for Regulus' ears only. "Indecent comes after dinner, when I can peel those trousers off you in private."