Here is a selection of sunglasses pulled from the Fashionism directory for your upcoming summer.
Dsquared
DQ38 Oversized Sunglasses
Electric Tonette
Rectangular Sunglasses
Lucky Audio
Aviator Sunglasses
Colors in Optics Unisex
Matahari Sunglasses
Tom Ford Brown
Plastic Tortoise Sunglasses
Carrera - Champion
Aviator Sunglasses
As reported by style.com, here are some great choices for Halloween costumes this year along with some tips on how to get your make-up "just so" for each look: For gaga, use scotch tape to achieve the angular lines on the face, it will provide the clean edge you need for the star.

Neytiri from
Avatar - The entire face should be coated with blue face paint then paint on the details. Add tribal jewellery and a tribal sear and you're set.
The red queen from Alice and Wonderland - Use a glue stick to completely take out your brows, apply crazy blue eyeshadow and a think black line far above your regular brow line.

Vampire Queen of Louisiana - Get a more glamorous and beautiful vampire look instead of the typical ghoul that we usually see on Halloween. Lighten your skin a few shades, line your brows and black cat-eye liner, with a blood red lipstick. Don't forget the fangs.

Tammy Faye Baker - The clumpier you can get your lashes the better. Either add individual falsies or brush your lashes vertically to achieve that "haven't washed my face in days" look.
The Rocky Horror Picture Show's Dr. Frank-N-Furter - It's all about glam; darkening the eyebrows and then adding a block of color, lighten the skin and brush a thick stroke of blush along the cheekbones, overstate the red with bright lipliner.
Anna Piaggi - Bright blue hair and round blush painted on the cheeks along with bright complementary colors and a zany hat.
Siouxsie Sioux - Triangle shapes with the eyes and the lips. Pale face, dark liner and lips black or red.
Taylor Momsen - It's all about a black smokey eye, the bigger the better.

David Bowie as Ziggy Stardust - Take an orange or peachy shade and brush it all over your lids, then have it pour down the side of your face, almost like you have been crying. Use a silver metallic on your lips and take a small glass and trace the color or your choice on your forehead.