These make me shudder:
shoulder pads
triangle-shaped nails
neon leggings
baggy jeans on girls (so not flattering!)
white eyeliner
Birkenstocks with socks (according to my friend "murag gihilantan!" So true!)
super bohemian outfits (long, peasant skirts with peasant blouses with beads and a bandanna and bangles that make them look like they're homeless, or like gypsies or like fortune tellers)