Celebrities are on the cutting edge of beauty trends and have access to the very best hair and makeup artists. But they can also get away with extremes that we mortals could never pull off in real life. Here are the latest celebrity beauty trends to try and to avoid.

Rihanna gets it right with a monochromatic palette applied with a light touch. Purple is a great choice for setting off her hazel eyes. Avoid matching shadow to your eye color.

A mega popstar like Christina Aguilera might be able to pull off blue, pink and white eyeshadow. But you shouldn't try. Pick a color that complements your eye color. Never match eye color. Stick with a monochromatic palette, and apply with a very light touch.

Jennifer Aniston made boho braiding work with an incredibly glamorous beaded gown. The trick is to keep the braiding simple and integrated into the rest of the hairstyle -- loose waves work best. Hide the end of the braid to avoid looking like a tween.

Kim Kardashian looks more like she's struggling with a bad hair day than a boho girl who just came from the beach. The braids are too tight compared to the rest of her hairstyle. And, let's face it, boho braids and batwing eyelashes just don't go together.