Billie Eilish has announced that she’s had to postpone a couple of dates on the US leg of her upcoming ‘Happier Than Ever’ world tour.The tour is set to kick off in New Orleans on February 3 and includes two nights at New York’s Madison Square Garden on February 18-19, and will wrap up with three nights at LA’s Forum on April 6, 8 and 9 before heading to the UK and Europe.Tonight (January 25), Eilish’s team took to Twitter to inform fans that “due to local guidelines and an abundance of caution” her February 15 and 16 shows in Montreal and Toronto have been postponed.“Details on rescheduled dates to be announced, and all tickets will be honoured for the new dates,” the tweet shared on Eilish’s official account added. “Thank you for understanding and please stay safe.”It was also announced that Eilish has had to reschedule her show in Phoenix on April 3 due to a scheduling conflict, after this year’s Grammys were moved from late January to the date in question.“Billie’s second show in Phoenix on Sunday, April 3rd has been rescheduled to Monday, April 4th due to the new date for the 64th Annual GRAMMY Awards,” her team tweeted.