Bigg Boss 13 Weekend Ka Vaar 04 | 18 Jan 2020:As a part of the freeze and release task of Bigg Boss, he sends in some special guests Gautam Gulati, Karan Singh Grover and Vindu Dara Singh to impart some knowledge to the contestants. Karan Singh Grover talks to his best friend Arti Singh and asks her not to change for anybody, come what may! He also reveals that Arti, Asim and Sidharth are wife Bipasha's favourite contestants.