I wanna wear extremely expensive suit.
What suit has famous brands like CHANEL, Louis Vuitton!
I don't know much of fashion, but I want to try it once!
I think it would be a nice experience!.
Especially, I want to try the signature white suit of CHANEL.
It looked really nice when I watched on TV.
I saw it once when I watched the model survival TV show!

"I will forgive their error, and I will no longer remember their sin."​ — Jeremiah 31:34
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I wanna wear an extremely expensive suit.
What suit has famous brands like CHANEL and Louis Vuitton?
I don't know much about fashion, but I want to try it once!
I think it would be a nice experience!.
Especially, I want to try the signature white suit of CHANEL.
It looked really nice when I watched it on TV.
I saw it once when I watched the model survival TV show!
= Add "an" because suit is a singular countable noun.
= Replace the comma with "and", making the list sound more natural. Also change ! to ? because this is a question. (second sentence)
= Fantastic sentences!