schick
chic / stylish
Fashionable, elegant, and tasteful in appearance or style.
Du hast dir aber ein schickes Kleid für die Hochzeit gekauft!
You bought yourself a really chic dress for the wedding!

chic / stylish
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chic / stylish
Fashionable, elegant, and tasteful in appearance or style.
Du hast dir aber ein schickes Kleid für die Hochzeit gekauft!
You bought yourself a really chic dress for the wedding!

'Schick' (chic/stylish) is often used for clothing, cars, or places like restaurants. A very common and useful phrase is 'sich schick machen' (to dress up), which means to dress elegantly or for a special occasion.
Für die Oper haben wir uns extra schick gemacht.
We dressed up especially for the opera.
The meaning 'considerable' or 'expensive' occurs almost only in the fixed colloquial phrase 'ganz schön schick' (pretty steep). It is often used as an ironic comment on a high price or an outrageous demand.
100 Euro für ein T-Shirt? Das ist aber ganz schön schick.
100 euros for a T-shirt? That's pretty steep.
'Schick!' (Chic!/Nice!) can also be used on its own as a short, positive exclamation to express admiration for something you see. It is a colloquial alternative to 'schön' (nice/beautiful) or 'elegant' (elegant).
Wow, dein neues Fahrrad! Schick!
Wow, your new bike! Nice!
pretty / fairly
'ziemlich' and 'schick' often appear together, but they do not mean the same thing. 'ziemlich' intensifies another word and says that something is that way to a fairly high degree. 'schick', on the other hand, describes the appearance or style of clothing, rooms, or things. So you can say: 'ziemlich schick' (pretty stylish). In that case, 'ziemlich' says how strong the impression is, and 'schick' says what you find attractive or elegant. On its own, 'ziemlich' is a degree word, while 'schick' is a descriptive word for style.

Für die Feier trägt Max ein schickes Hemd.
Max is wearing a stylish shirt for the party.
Das Restaurant ist ziemlich voll, deshalb warten wir draußen.
The restaurant is pretty full, so we're waiting outside.