Many woke up this morning to the shocking news that another attack had occurred in London late last night.
With the death toll reaching to seven and 44 casualties, the stars are reacting to this horrific event.
Ariana Grande:
Paris Hilton:
Niall Horan:
Khloe Kardashian sent her love:
Simon Cowell: 
Meanwhile stars sported tributes to the victims of the Manchester terror attack at the British Soap Awards.
EastEnders actress Jacqueline Jossa had a yellow ribbon on her dress in memory of those affected.
Hollyoaks star Jamie Lomas wore a pin reading Mancunian.
Catherine Tyldesley, who's in Coronation Street, carried a bag embossed with the words We Stand Together.
She says they wanted to show unity.
