Dress: Mya Tunic by Poupette St Barth (via Fashionista)
Harper Spiller (played by Aubrey Plaza) on The White Lotus on HBO was spotted wearing this white floral maxi dress on The White Lotus on episode 'In the Sandbox' (2x04) in Nov 2022. Harper's Dress is the Mya Tunic by Poupette St Barth .