Washington [US], August 11 (ANI): American actress and singer McKenna Grace will co-star with Allison Williams in ‘Regretting You’, an indie adaptation of the 2019 novel from ‘It Ends with Us’ writer Colleen Hoover, reported Deadline. The announcement coincides with the theatrical release of Sony’s ‘It Ends With Us’ adaptation, starring Blake Lively and Justin Baldoni. The indie adaptation of Colleen Hoover’s Regretting You is all set to star McKenna Grace alongside Allison Williams. The adaptation is set to be helmed by The Fault in Our Stars director Josh Boone, from a script penned by Susan…