Brothers Grayson and Ethan Dolan are just two goofy guys living life and recording it. Posting a new video every Tuesday, the twins nearly doubled their total subscribers in 2017, ending the year just shy of the 5M mark. They posted one of their most popular videos of all time in November, receiving over 8M views when they proved the iPhone X’s facial recognition feature couldn’t tell the difference between their identical faces. The duo also made headlines shortly after their 18th birthday in December by surprising strangers in NYC’s Times Square with holiday gifts in the hopes of bringing even more smiles to the world. Their proven ability to entertain millions of people led MTV to add the siblings to their rotating cast of hosts on the reboot of TRL.