The present invention concerns Vgll3 a new target involved in adipogenesis modulation. Further, the present invention relates to methods to increase Vgll3 activity in adipocytes and preadipocytes. In addition, pharmaceutical composition comprising Vgll3 activity enhancing molecules in order to enhance the Vgll3 activity in a target tissue are also provided. These methods, compositions and molecules can be useful to modulate adipogenesis and thus treat obesity and related disorders.