Victoria, Minzy and Shin Ji wearing Adidas

Victoria (F(x)), Minzy (2NE1) and Shin Ji (Kyote) all wore this same dress/tee:

Adidas Stripe Oversized Tunic with Drawstring by Adidas Originals

Amber, Victoria and Luna wearing Jeremy Scott/ Adidas originals

In the Gasta Boy performance of F(x) on M.Countdown on april 28 the girls were weaing some Adidas/ Jeremy Scott clothes and shoes.

Amber:

Jeremy Scott x Adidas Flames

Victoria:

Pants: Jeremy Scott x Adidas Flame Track Pants
Shoes: Adidas Originals x Attitude Logo Shoes*

* Maybe the shoes are also Jeremy Scott for Adidas

Luna:

Jeremy Scott x Adidas Leopard Sneaker Wedges

Since my screenshots are never really clear. Here is the performance: