First we showed you how to dress like LMFAO, a costume great for anyone going out as a duo on Halloween Night. Next up, Kathy Beth Terry from [lastfm link_type="artist_info"]Katy Perry[/lastfm]‘s “Last Friday Night” video, one of our favorite pop nerds of 2011! Her ’80s-looking outfit is perfect for a colorful Halloween night!

Just make sure you spend it like Katy Perry spends her “Friday Nights”–sans the puking in a rollerskate, of course.

Like, totally, fer shure, grody to the max.

The Hair:

If you don’t want to give yourself a full-on permanent (high five for not making that decision, girl), you can always curl and tease your hair like the girl in this video. You’ll need a fine tooth comb, tiny curlers, and lots and lots of hairspray. Maybe two cans depending on how thick your hair is.