The present invention relates to devices and methods for creating and securing a tissue fold during an endoluminal medical procedure. The devices and methods may be used for folding and securing, for example, a fundus wall onto an esophagus wall. An aspect of the invention includes a two-piece tissue clip configured to be installed through an endoluminal device to secure a tissue fold. The clip includes a female member and a male member configured to engage one another to secure the tissue fold. Another aspect of the invention includes a clipping device comprising a tissue clip magazine. The magazine is configured to hold a plurality of tissue clips and install the plurality of tissue clips in a single actuation of the magazine. A method for using the clipping device together with the tissue clips of the present invention to create and secure a fold of tissue during an endoluminal procedure also is disclosed.