After Timothée Chalamet showed up at his own celebrity lookalike contest, similar events have popped up in cities across and beyond the U.S. Here's a look at the winners — and what's behind the trend.

(L-R) Jaleel White on 'Family Matter,' Jaleel White at Cool Comedy Hot Cuisine Benefitting The Scleroderma Research ...

Ariana Grande, Cynthia Erivo premiered the highly anticipated film 'Wicked' in London Monday evening. (Nov. 18) ...