Is a suitor's request for his fiancée to send pictures with her hair uncovered or in full, or to open the camera for him to see parts of her body, considered a transgression during the engagement period?

The fiancée is a stranger to the suitor. It is not permissible for him to do with her what is forbidden with a strange woman, such as speaking without need, seeing her hair, or enjoying conversing with her. It is common for phone conversations between fiancés not to be free of such things, so he must repent from these actions. The legal marriage contract is what makes her permissible for him, and then it becomes permissible for him to do with her what is permissible for a husband with his wife, along with hastening to complete the marriage and consummate it. Exchanging gifts between fiancés is permissible as long as it does not lead to something forbidden.