Method starts with a processor receiving first media content item from first client device and selection of invitation media overlay to be applied to first media content item. Processor generates modified first media content item by overlaying invitation media overlay on first media content item. Processor generates shared collection of media content items comprising modified first media content item. Processor receives selection of second and third user and causes modified first media content item to be displayed by second and third client devices. Processor receives selection of invitation media overlay from second and third client devices and causes shared collection to be displayed second and the third client devices. Processor receives second media content item from second client device, updates shared collection to comprise second media content item and causes updated shared collection to be displayed by first and third client devices. Other embodiments are also disclosed herein.