Avril Lavigne's look traditionally includes heavy black eye makeup, dark clothes, and hair hanging down.
With hair wavy and heavy eye makeup removed, however, she looks like… the beautiful girl next door.
With his carefully-constructed androgynous look, of course Marilyn Manson is on this list. When performing he wears black eyeliner, exaggerated lipstick, one white contact lens, and a pale makeup base.
Without his iconic look, he's no different than the plain, average Joe. Or Brian, in this case, as his real name is Brian Hugh Warner.
Adele is a voluptuous singer with big eyes, rosy lips, and perfectly coiffed hair.
Without so much makeup, and with her hair a bit frumpy, she looks like the cute girl you might see reading at Starbucks.
Katy Perry is known for her outlandish outfits, complete with a rainbow of wigs.
Once, Katy Perry's former husband Russell Brand took a photograph of her first thing in the morning without makeup and tweeted it. They are now divorced. While there is probably no direct connection between the photograph and their break up, it did show that even gorgeous Katy Perry looks pretty ordinary without her trademark makeup and colorful hair.
Powerful singer Adam Lambert, who was a finalist on "American Idol," created a bit of a devilish, bad boy look. He incorporated dark eyebrows, dark eyeliner, and a stubbly beard and mustache.
Without these features, he looks like a different person. Perhaps a handsome college athlete, but certainly not like his more flamboyant stage persona.
Lady Gaga is a talented singer, songwriter, musician, and dancer. She usually wears a lot of makeup and a variety of crazy clothing.
Without any makeup, however, she looks beyond ordinary. Kudos to her, however, for playing up her plain look in several sketches on Saturday Night Live.
Kesha wears glittery makeup, glitter in her hair, plus leather and various sexy outfits on stage. Although her makeup may be a bit overdone, it's also quite stunning.
Without this look, she's still cute, but with a bit more of a tomboyish appearance.
Dita Von Teese looks ravishing when she's done up for her burlesque shows; her hair elegant, makeup subtle, and outfits incredibly sexy.
Without makeup, she still owns her looks, and comes off as sweet and charming.
Nicki Minaj is almost never seen without vibrant makeup or an unusual hair color. She tends to give herself a bright look.
Without makeup, she's actually difficult to recognize. She looks like a pretty ordinary lady.