It is possible to follow someone else's wishlist in the following ways:

1. The person shares the wishlist with you, for example through a link, SMS, or QR code. You can then choose to follow it.

2. It is also possible to search for the person who owns the wishlist. This can be done under 'Friends' by searching for their name. Once you have found their profile, you will be able to see their wishlists.

Note: The person may have chosen to have a private profile, in which case it will not be possible to access their wishlists.