The Doctor (Contents)

An incarnation of the Doctor was the product of a regeneration by their female predecessor.

Immediately after the regeneration, the Doctor decided that the attire of their previous incarnation "wo[uld]n't do". The Doctor then chose their new clothing in the TARDIS, sturdy boots and a new hat being amongst the items chosen. After this, the Doctor exclaimed "And that is that". (NOTVALID: Contents)

Appearance
This incarnation had a "nice" new face which fitted well into place. Their hair was short and their nose was just right. Their legs were firm and their eyes were bright.

Wearing the clothes of their predecessor for a short time and believing them to be "off-the-peg", the Doctor first pondered on wearing a frilly shirt and a scarf before deciding "Think I'm over them" and "A touch too soon" respectively. The Doctor finally chose some sturdy boots, believing them to be handy for the Moon and a "nice" new hat. (NOTVALID: Contents)

Behind the scenes

 * The gender of this incarnation is not made clear.
 * Although it is not explicitly stated exactly wear Contents falls within the Doctor's life it depicts a chest with a single item that was owned by each incarnation including the handbag owned by the female incarnation from The Death List implicating this Doctor to be the one that follows her.