"Another Jenner world record, and at 65? Who`da thought!" Caitlyn tweeted Monday night. "Humbled & honored to have reached 1M followers in 4 hrs. Thank you for your support."
The Guinness-certified record was previously set on May 18 by the president, who amassed 1 million followers in a little under 5 hours after launching his personal Twitter account, @POTUS.
The record was formerly held by movie star Robert Downey Jr., who reached 1 million followers in 23 hours and 22 minutes in April 2014.
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