1. The Wig:

This pop star is known for her many wigs, from pink and blonde curls to angelic white locks, but this bang-fronted blonde bob is her most iconic and perfect for your night out.

2. The Sunnies:

Grab the biggest black sunnies ($5.99, dELiA*s) you can find, a gold Sharpie, and go crazy! But don't be surprised if you're followed by the paparazzi!

3. The Jacket:

A hip boyfriend jacket like Alloy's double-breasted drop waist coat ($55.92) will help you beat the chilly night and look like a true fashionista.

4. The Bodysuit:

OK, so it's not technically a body suit, but a retro boycut bathing suit ($44.50, dELiA*s) totally works, too! Find some mirrored pailletes or silver rhinestones from MJTrim.com and get to work on making her famous on-stage costume.

5. The Shoes:

A perfect pair of platform booties ($36.90, Alloy) with fab fishnets will make the boys, boys, boys go ga ga! And, these shoes are functional -- invest for Halloween; wear all season long!