Watch trailer for new Caitlyn Jenner film

Caitlyn Jenner

“Jenner: 40 Years After Gold,” a look back at Caitlyn Jenner‘s decathlon title at the 1976 Montreal Games, will accompany a Sports Illustrated cover story next week.

On June 1, 2015, a Twitter account — @Caitlyn_Jenner — launched with an image of Jenner on the cover of Vanity Fair.

It reached one million followers in around four hours after its first tweet, breaking a record set by President Obama’s handle — @POTUS.

MORE: Jenner’s message to Ashton Eaton after decathlon world record