Law often thinks about how ironic it is that most of his attire consists of clothes with some sort of fluff, a stark contrast from his cold,hard nature. He can't help acting aloof, it's just what he's what he's gotten used to doing. His favourite shirt is the one with a feather collar. It feels soothing to just breathe into it and remember snuggling into the huge feather coat that Corazon used to wear. The feathers aren't charred and dusty like his was but that doesn't matter, they still make him think of the good times unlike so many other things.
It's not like anyone really pays attention to his fashion sense (it isn't distinct and flamboyant like some of the members of the Donquioxte family are like), they're more concerned with the danger he potentially poses to them. And that's fine by him. He's not about to change his style when his intimidating aura is enough to make them quake in their boots. The fluff helps keep him warm anyway, stops him from being cold and remembering the night where everything that had seemed right turned upside down. It had been freezing back then and that's perhaps a reason why he detests the cold.
He's seen the eyebrows some people raise when they see his spotty pants and his equally spotty hat. The pants are another reminder of his past though the memory in question is a darker thing altogether. Though the colour is not the same, the shapes are still similar enough to mimic the mottling that his skin used to have when he had Amber lead disease. Nobody's going to make that connection though, he's not going to let anyone know about those dark times.
The hat wasn't meant to be a reminder. It's just one to replace his old hat. His first hat was a gift from his deceased family and he was glad that his younger self wore it almost literally all the time. If that hadn't been the case, he could have lost that too and had nothing as a memento from his early childhood. It got tatty and he outgrew it but he kept it, even when he got a new hat to replace it. It was almost a replica save for a few extra spots on the rim. He changed hats again and though he changed to a different style of hat, he kept the spotty theme. Perhaps it was for nostalgic reasons.
His tattoos are the most outstanding feature on his body by far. He's not a narcissist but he will admit, the symmetrical ink patterns go well with his toned muscles. There's a story to be told behind every single one of those from the crosses on the back of his hands to the large stylised heart on his chest. Some of them are tributes and some are reminders. There's some irony on the array of hearts covering him. One might assume from those that he's a romantic man but he's far from that. The last strong relationship he had was 16,no, 13 years ago and how long had that lasted? The people who he's closest to at the moment are his crew and that's probably the most he's going to involve himself with relationship wise.
He tries not to show it but he has a deep seated fear rooted inside of him that is reluctant to lose anyone again. He's 26 now and with full control over his fruit power so he's perfectly capable of safeguarding his crew but he does not want to add to the list of people to protect. There's only so much he can do to look after his crew and bonding with more people than that would only make it harder. The only exception is the alliance with the Straw hats and he's perfectly sure that they can take care of themselves.
Almost his entire upper body is inked yet he usually conceals the majority of them under his clothes. The ones on his hands can be easily explained but as for the rest of them, he prefers to keep them to himself. There's no need for him to needlessly show himself off and practically ask for someone to try poking their nose into his business. Nobody needs to know how hopelessly tangled he is in revenge, how complicated and distorted his past is, how dark and ugly life has made him.
He's not a monster like Doflamingo but he shudders at how if things had been different he could have easily become like him. He's better but only just. He can maintain his cool appearance all he likes, make as many plans as he needs to stay on top of things but really he knows what he's like. Inside, he's a mess of trauma,hatred,depression and guilt. That's what he hides underneath his clothes, behind all the walls he permanently keeps up and conceals behind a neutral expression just for good luck.
One day though, if he gets pushed too far, it won't matter what barriers he's put up, all his negativity is going to come spilling out and all he will be able to do is cry.