Here are some key stories from the world of entertainment. Hollywood singer Katy Perry is reportedly set to perform at Anant Ambani and Radhika Merchant’s pre-wedding party in Cannes on May 31. The singer is expected to entertain Ambani’s guests at the masquerade ball in Cannes. Reports indicate that Katy is charging over Rs 424 crore to perform at the event. The first poster and teaser of Ajay Devgn and Tabu's starrer 'Auron Mein Kaha Dum Tha' have been unveiled on May 31. Moving on, Akshay Kumar was spotted at the Mumbai airport with his mother-in-law, Dimple Kapadia. Kriti Sanon made a style statement in a stylish camel-coloured three-piece co-ord set.