Olivia Wilde had reason to celebrate on Sunday as she marked Mother's Day with her two children.MORE: Olivia Wilde stuns fans with completely unexpected photoThe House actress is a doting mom to son Otis and daughter Daisy, who she shares with ex-fiancé Jason Sudeikis.The star shared a candid picture of Daisy running through a field to mark the special day, as well as a throwback picture of her own mother, which was titled: "The OG".VIDEO: First look at Olivia Wilde in Don't Worry Darling Olivia recently made headlines after being served custody papers while on stage at CinemaCon 2022.MORE: Don't Worry Darling: everything you need to know about Harry Styles and Olivia Wilde filmREAD: Olivia Wilde shares very rare photo of her childrenThe 38-year-old was giving a presentation on her upcoming film, Don't Worry Darling, when she was approached by someone in the audience.The star - who is currently dating Harry Styles - carried on with her speech after opening the envelope, and has since remained silent on the incident.