The "E.T" singer was told by one of her friends to check Billie out but Katy was less than impressed at the time.
The 'When We All Fall Asleep, Where Do We Go' tour was supposed to last for six months but was called-off due to the coronavirus pandemic.
Billie Eilish delivered a searing anti-Trump speech at the Democratic National Convention, urging Americans to vote like their “lives depend on it”.
New York's star-studded Met Gala will focus on youth and diversity this year, with four co-chairs under the age of 30 -- actor Timothee Chalamet, poet Amanda Gorman, singer Billie Eilish and tennis player Naomi Osaka.
Billie Eilish is giving fans an intimate look at her journey to stardom in a new book and separate audiobook, "Billie Eilish: In Her Own Words."
Eilish wore a voluminous Oscar de la Renta gown to the event with no fewer than 30 pieces of Cartier jewellery, the most ever worn by a star on the red carpet.
The album, which features 16 songs, was released earlier on 30 July by Interscope Records, and has already garnered strong reviews from critics.
Teenage pop artist has received praise for calling out society’s unrealistic standards of beauty for women.
She appeared to throw a shade at singer-actress Jennifer Lopez at the Sunday ceremony and it was caught on camera.