That is just so...

Situation: you're out doing a bit of shopping with some friends when one of them picks up a bright pink polyester blouse, thrusts it under your chin and exclaims that the colour brings out your eyes.
Yikes. How to explain you might consider it if it only wasn't so... tawdry. Yes! That's the word.

Tawdry (taw-dree):

–adjective

1.	(of finery, trappings, etc.) gaudy; showy and cheap.

2.	low or mean; base: tawdry motives.

–noun

3.	cheap, gaudy apparel.