London terror attacks: Ariana Grande, John Mayer, Paris Hilton take to Twitter to express solidarity with victims

Singers Ariana Grande, Demi Lovato, Joe Jonas, John Mayer, actors Mandy Moore and Debra Messing among others are sending their prayers to people of London after the two terror attacks killed six people and injured 30 others. The attacks that took place at London Bridge and Borough Market come just days ahead of the general election on June 8. Grande, whose recent Manchester concert was the site of a terrorist attack, tweeted in support of the victims.