The colors the colors the colors.
Thakoon (2.) Relaxed art teacher vibes. The cool kind of art teacher! Not the Ghost World kind. Also the colored hair is obviously A+.
Celine (3, 5.) Phoebe Philo does bright colors incredibly well, too. Part one for more.
Givenchy (4.) Part three, but sweet lord do I want to wear an all-red suit with brooches that look like they were acquired randomly in random places over a long period of time.