WARNING!
This mod requires Console Open Suit from "Grand Theft Auto IV and Episodes From Liberty City: Characters Fixes" mod by TheYoshiPunch in "OPTIONAL" folder (GTAIV Trilogy Characters Fixes\OPTIONAL\GTAIV & EFLC Console Niko Open Suit, Pant and Shoes) or any mod similar to this:
Examples of mods that ports the open suits from X360/PS3 version of the game:
-https://gtaforums.com/topic/927587-console-niko-clothes-pack/
-https://www.gtainside.com/en/gta4/skins/182695-open-suits-amp-the-turtlenecks-for-iv/
-https://www.gtainside.com/en/gta4/skins/119752-open-suits/
-https://github.com/Tomasak/Console-Visuals/releases/download/latest/Console.Clothing.zip

How to install:
1. Rename the "uppr_diff_005_RENAMELETTER_uni.wtd", "uppr_diff_005_ANYLETTER_uni.wtd", "lowr_diff_002_RENAME_uni.wtd" and "lowr_diff_002_ANYLETTER_uni.wtd" (between 005_ and _uni) to any letter you want to rename (For example: "uppr_diff_005_h_uni.wtd", "uppr_diff_005_i_uni.wtd", "lowr_diff_002_p_uni.wtd" and "lowr_diff_002_q_uni.wtd")
2. Then copy the files with OpenIV to pc/models/cdimages/playerped.rpf and save it.

Hints:
You can replace one of the original suits instead of adding them. :)