Garry Marshall‘s latest holiday ensemble Mother’s Day has added Britt Robertson (Tomorrowland), Timothy Olyphant (TV’s Justified), and Shay Mitchell (TV’s Pretty Little Liars) to its lineup. They will be joining cast members Julia Roberts (Pretty Woman), Jennifer Aniston (Horrible Bosses), Kate Hudson (How to Lose a Guy in 10 Days), and Jason Sudeikis (Horrible Bosses). Jack Whitehall (TV’s Bad Education) and Aasif Mandvi (The Internship) have also signed on. 

The film will follow the same general plot structure of the past Marshall holiday romantic comedies Valentine’s Day and New Year’s Eve, but this time will focus on a variety of mothers leading up to their celebratory day. Olyphant will be playing Aniston’s ex-husband who has recently gotten remarried to Mitchell, and all she wants is to be the perfect stepmom to Aniston and Olyphant’s kids. Robertson will playing a brand new mother to an in infant baby, while Whitehall will play her boyfriend and aspiring stand-up comedian.

The screenplay was written by Anya Kochoff (Mother-in-Law) and Lily Hollander, with additional help from previous Marshall collaborators Tom Hines and Matthew Walker (Valentine’s Day). Open Road Films will release Mother’s Day on April 29, one week before the actual holiday.

Since starring in two major films this year- Tomorrowland and The Longest Ride –Robertson has experienced a surge in demand, booking the soon-to-be released Henry Joseph Church with Eddie Murphy (The Nutty Professor) and the sci-fi flick Out of This World with the young rising star Asa Butterfield (Hugo).

Olyphant recently wrapped his five year starring role on the FX series Justified  and was featured on the big screen opposite Tina Fey on last years’ This is Where I Leave You and will soon be seen in Oliver Stone‘s Snowden.

Mitchell will be continuing her six years and climbing run on the ABC Family show Pretty Little Liars. Mother’s Day will only be her second feature film after appearing alongside Jason Schwartzman (I Heart Huckabees) in MF, which is now in post-production.