Making yourself seem way different than you actually are on online dating websites. Examples would be using photos from a long time ago, exaggerating your skills, talents, hobbies, etc.
The girl's profile picture was from like 10 years ago. Trust me...she doesn't look anythinglike that these days. Do these people realize how wrong and dishonest this type of kittenfishing is? What a waste of my time.
Color washing - wearing black against a black background or adjusting the brightness to hide facial details.
Crowd hiding- being in a group picture wedged closely between two other people.
Sliming or body shaping undergarments-wearing spanx or girdles.
I met a girl online when I showed up on our first date she was clearly several years older and 30 lbs heavier than her pictures led me to believe. I knew immediately she was kittenfishing but to avoid an awkward situation I still continued the date that ended up costing $120 and about 10 hours of my life between communicating talking on the phone and the date.