Rihanna left her fans very concerned after she burst into tears during her second song of a Dublin gig last night, to which she arrived 30 minutes late.

The star seemed fine as she began singing her collaboration with Eminem, Love The Way You Lie, and fans sang along heartily.

But soon into it, Rihanna moved away from the mic and held her hands up as tears streamed from her eyes.

The singer struggled to keep it together (Picture: Twitter)

The moment was filmed by several gig-goers who said they hoped the Bajan singer was okay.

While Love The Way You Lie is quite an emotional song about broken relationships, and the 28-year-old has been known to cry on stage before.

During her song Take A Bow at a gig last year she broke down, and at the time people wondered whether she was thinking of her ex Chris Brown.

But she also cried with happiness at the intensity of her French fans’ devotion at a 2013 gig in Lille.

Indeed, last night Rihanna later told the crowd: ‘I only have ever in my life heard an audience of people scream so loud that they sound like one voice and that only happens in Ireland, in Dublin. Thank you so much.’

However, after the emotional display fans started been speculating that ‘something must’ve happened before the show’.

Seeing as the star was half an hour late it may have simply been the stress of hurrying on stage, or maybe something more serious.

Rihanna has remained quiet over her private life recently with rumours abound that she and rapper Drake are in a relationship again.

Others on Twitter suggested they might have been tears of joy or that there may have been someone responsible for upsetting her.

I wonder why my baby Rihanna was crying on stage.. That song is hella emotional tho..

— 𝒫ℴ𝓃𝓎ℴ 🌸 (@_NeChi_) June 21, 2016

https://twitter.com/poojaslays/status/745364066345025537

https://twitter.com/VlEWSFENTY/status/745406021351411712

https://twitter.com/caIImebcby/status/745352545040728064

Rihanna’d mood appeared to lift later, and has posted some cheeky Instagram posts since the gig, including one taken on her from below the stage.

She also got a lot of perks at a bar or hotel where she stopped off – and everybody knows whiskey makes everything feel better.

Seeing as her new single with Calvin Harris is selling like hot cakes, as is her single with Drake, Too Good, she really needn’t be feeling low.

Metro.co.uk reached out to Rihanna for comment.