YOU SAID:

I hopped into the coffee shop and then my jaw dropped in shock when I saw a girl with really cool pants.

INTO JAPANESE

私はコーヒーショップに飛び込み、とても素敵なパンツを履いた女の子を見たとき、驚きで顎が落ちました。

BACK INTO ENGLISH

I popped into a coffee shop and my jaw dropped in surprise when I saw a girl wearing really nice pants.

INTO JAPANESE

コーヒーショップに立ち寄ったとき、とても素敵なパンツを履いている女の子を見てびっくりしました。

BACK INTO ENGLISH

When I stopped at a coffee shop, I was surprised to see a girl wearing very nice pants.

INTO JAPANESE

喫茶店に立ち寄ったら、とても素敵なパンツをはいている女の子を見てびっくりしました。

BACK INTO ENGLISH

When I stopped by a coffee shop, I was surprised to see a girl wearing very nice pants.

INTO JAPANESE

喫茶店に立ち寄ったら、とても素敵なパンツをはいている女の子を見てびっくりしました。

BACK INTO ENGLISH

When I stopped by a coffee shop, I was surprised to see a girl wearing very nice pants.