Justin Timberlake welcomed Will Smith to Instagram by sharing a special #TBT, or "Throwback Thursday," post.
Timberlake posted a picture of himself greeting Smith at the 2013 MTV Video Music Awards. He explained the concept behind #TBT posts in the caption.
"Welcome to Instagram @willsmith. This is called a #TBT. Which means Throwback Thursday. Which is a photo you post on Thursdays that you like, that was taken in the past," the singer wrote.
"I like this photo because it's a photo of you and me," he added. "And we look like we are having a serious conversation about something very important. And that makes me feel important."
She showed the star how to make a duck face and take a mirror selfie, which he shared on his account.
Smith had amassed over 1.1 million followers as of Friday morning.