dress ⇒ 他不讲究穿戴。 Tā bù jiǎngjiu chuāndài. → He's not particular about what he wears.
张冠李戴
confuse one thing with another ⇒ 他不是我们经理,我看你是张冠李戴了。 Tā bùshì wǒmen jīnglǐ, wǒ kàn nǐ shì Zhāng guān Lǐ dài le. → He's not our manager – you're confusing him with someone else.