The veteran rock star has fallen ill ahead of their upcoming tour of North America.
Fans are tweeting Mick Jagger their well-wishes after The Rolling Stones had to postpone their upcoming tour of the US and Canada.
The group's 75 year-old frontman needs medical treatment - it's unclear what for, but he's expected to make a full recovery.
People who've bought tickets are being told dates will be rescheduled shortly.
Mick tweeted, apologising to fans:
I’m so sorry to all our fans in America & Canada with tickets. I really hate letting you down like this.
I’m devastated for having to postpone the tour but I will be working very hard to be back on stage as soon as I can. Once again, huge apologies to everyone.— Mick Jagger (@MickJagger) March 30, 2019
The Rolling Stones' world tour began back in late 2017.
