Allison Williams & Dave Franco Join ‘Regretting You’ Co-Stars Mason Thames & Mckenna Grace For First Time on Promo Tour | Allison Williams, Dave Franco, Mason Thames, McKenna Grace, regretting you | C

The stars of Regretting You get in a group photo at a Los Angeles Screening!

Allison Williams and Dave Franco joined their young co-stars Mason Thames and Mckenna Grace for the first time on the promo tour at a Buzzfeed Special Screening held at IPIC Westwood on Sunday (October 19) in Los Angeles.

While Allison attended a screening a few days before, this is the first time the older co-stars joined the young stars for a promo event.

The week before, Mason and Mckenna took their promo tour to Germany for their first international stop!

Regretting You , based on the book by Colleen Hoover , introduces audiences to Morgan Grant ( Williams ) and her daughter Clara ( Grace ) as they explore what’s left behind after a devastating accident reveals a shoc