A clothing recommendation system comprising: at least one processor, characterized in that the at least one processor is configured to: acquire, from a measurement system including a three-dimensional scanner or a sensor, a measured value of a body of a user, the measured value including at least a combination of an underbust breadth and an underbust depth; acquire, from a terminal, additional information of the user other than the measured value; receive a clothing size of the user from the terminal, or refer to a database storing clothing size information defining a correspondence relationship between a measured value of a body of a person and a clothing size to determine the clothing size of the user from the acquired measured value; calculate a body oval that is a ratio between the underbust breadth and the underbust depth; refer to the database further storing a rule indicating a relationship between a measured value of a body of a person and a body type characteristic that is a characteristic of a body type of the person to determine the body type characteristic of the user from the calculated body oval; refer to the database further storing clothing information indicating a correspondence relationship between clothing items and body type characteristics, and retrieve a clothing item corresponding to the clothing size of the user, the determined body type characteristic, and the acquired additional information; and transmit recommendation information indicating the retrieved clothing item to the terminal. at least one processor, characterized in that the at least one processor is configured to: acquire, from a measurement system including a three-dimensional scanner or a sensor, a measured value of a body of a user, the measured value including at least a combination of an underbust breadth and an underbust depth; acquire, from a terminal, additional information of the user other than the measured value; receive a clothing size of the user from the terminal, or refer to a database storing clothing size information defining a correspondence relationship between a measured value of a body of a person and a clothing size to determine the clothing size of the user from the acquired measured value; calculate a body oval that is a ratio between the underbust breadth and the underbust depth; refer to the database further storing a rule indicating a relationship between a measured value of a body of a person and a body type characteristic that is a characteristic of a body type of the person to determine the body type characteristic of the user from the calculated body oval; refer to the database further storing clothing information indicating a correspondence relationship between clothing items and body type characteristics, and retrieve a clothing item corresponding to the clothing size of the user, the determined body type characteristic, and the acquired additional information; and transmit recommendation information indicating the retrieved clothing item to the terminal. acquire, from a measurement system including a three-dimensional scanner or a sensor, a measured value of a body of a user, the measured value including at least a combination of an underbust breadth and an underbust depth; acquire, from a terminal, additional information of the user other than the measured value; receive a clothing size of the user from the terminal, or refer to a database storing clothing size information defining a correspondence relationship between a measured value of a body of a person and a clothing size to determine the clothing size of the user from the acquired measured value; calculate a body oval that is a ratio between the underbust breadth and the underbust depth; refer to the database further storing a rule indicating a relationship between a measured value of a body of a person and a body type characteristic that is a characteristic of a body type of the person to determine the body type characteristic of the user from the calculated body oval; refer to the database further storing clothing information indicating a correspondence relationship between clothing items and body type characteristics, and retrieve a clothing item corresponding to the clothing size of the user, the determined body type characteristic, and the acquired additional information; and transmit recommendation information indicating the retrieved clothing item to the terminal.