Help me ! i am looking for a pinterest style social theme

Hey,
I am looking to set up a website with WordPress where people can share pictures in a specific niche. I am looking for a WordPress theme that people can create accounts, login, share pictures, favourite and comment other peoples photos.
I like the pinterest style pin-board theme. However i do not want an exact clone of this.

Can anyone help me ?? i am willing to pay for a premium theme.