Watch Sister of the Groom (2020) HD Full Movie Free on SolarMovie. Watch Sister of the Groom (2020) online free. On Audrey's 40th birthday, her brother is marrying a girl he met in France. Secrets are revealed pri...On Audrey's 40th birthday, her brother is marrying a girl he met in France. Secrets are revealed prior to the wedding. Audrey and the young, French fiancee do NOT get along.