Oprah Winfrey turns 60 today, but it looks like she'll celebrating quietly this year.

"E! News" reports that the media mogul called off her party at the last minute.

A source tells the site that plans for an elaborate celebration were underway, but Oprah decided to cancel after the guest list started "getting out of control."

Longtime friend Gayle King also told the site recently that Oprah is "still trying to figure out" her plans for the milestone. And while it may not be as glamorous as a star-studded party, Oprah did get a special birthday workout last week.

She posted a video on Instagram of a group spinning class in Hollywood, where 50 of her workout pals reportedly greeted her with a playlist of her favorite tunes and wore gym shorts that read, "Happy Birthday Oprah!"