It is a known fact that filmmaker Karan Johar is interested in costume designing and the latest to take his services is Aamir Khan. The star will be wearing a KJo-designed outfit for his nephew Imran Khan's wedding with Avantika Malik.

"Karan has designed clothes for Aamir and his son Junaid. He has designed a traditional as well as a formal suit for the wedding functions, " said a source.

Not just Aamir, the filmmaker has also been acting as a mentor to the bride-to-be, Avantika Malik.

Karan has helped Avantika plan the entire wedding from clothes, jewellery, make-up to card designs.

However, for the mehandi celebrations Saturday, Imran and Avantika will be wearing designer Varun Bahl and Manish Malhotra's clothes.