Systems and methods for collaborative shopping

Systems and methods are disclosed herein for facilitating collaborative shopping. Notifications may be sent to remote devices in response to a shopper's device entering a store or within a given proximity to a store. Notifications may invoke or include an interface to add items to a shared shopping list. Notifications from the shopper's device may be sent in advance of a user entering a store to alert friends and family to add items to the shared shopping list. A remote device may be used to authorize and instruct the shopper's device to pick up items that have been previously purchased either automatically or in response to an input from a user of the remote device. Authorization to pick up the previously-purchased item may be transmitted to one or both of a merchant and the shopper's device.