Ariana Grande has led tributes to the victims of the London terror attacks
The pop star – whose concert was attacked by a suicide bomber in Manchester, leaving more than 20 fans dead – told her followers she was “praying” for the city after the attacks near London Bridge and Borough Market.
Last nights' attack, which has so far left six dead and at least 48 injured, occurred on the same weekend the American singer was due to perform a charity concert for the victims of the Manchester bombing.
Other celebrities also took to social media to express their thoughts following the night of horror.
Popstar Ariana Grande said she was 'praying' for London
Love Island star Olivia Buckland wrote to her 310,000 followers: “Lost for words. Again. How can this carry on. Be safe London.
“I just feel sad for our world. For our country. Just makes me feel sad. Life is way too short &there are horrific people making it shorter.”
Cara Delevingne wished her followers well in an instagram post
In a later tweet, she added: “Cannot sleep after this news. We love you London. Thinking of you all.”
Britain’s Got Talent judge Simon Cowell also offered his condolences, tweeting: “Thoughts are with innocent victims caught up in London Bridge incident.
Manchester terror attack: Celebs in display of solidarity with victims Tue, May 23, 2017
Celebrities have taken to Twitter in a staunch display of solidarity with victims of the Manchester Arena attack
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“Please try to stay safe people."
Model Cara Delevingne said: “My heart is with you London. Please can everyone stay safe.
“This is beyond tragic but we must stand together and not let this break us."
And TV chef Gordon Ramsay told fans: “Stay safe tonight London. Thinking of you.”
TV chef Gordon Ramsay urged his followers to 'stay safe'
Ariana is due to perform at a benefit concert for Manchester bombing victims today
Police are now expected to launch a large-scale investigation after the incidents in Central London.
Prime Minister Theresa May is also expected to chair an emergency COBRA meeting with ministers this morning.