格好つけるのはやめなさい。の英語

Stop showing off.

Don't give yourself airs.

Come off it!

Stop showing off!

Don't show off.

to add style to one's appearance

Stop harassing me.

Please cease from quarreling.

Please stop fighting.

Stop showing off already.

Oh, come off it.

Stop wasting money.

Oh, come off it.

Stop being a dumb-ass.

Stop showing off!

of a person, the quality or characteristic of stylishness

Stop making a fuss.

in a shapeless manner

the degree to which a person's appearance is stylish

Let's stop finding fault with each other.

Please stop procrastinating.

Stop grumbling.

Stop pretending to not understand.

（頭なら）a shapely head―（口なら）―a well-formed mouth―（姿なら）―a well-proportioned figure―（上衣なら）―a well-cut coat

Stop prying into my affairs.

Don't be so mysterious.

Stop picking on Tom.

Stop joking.

Get serious.

Stop joking around.