Aamir Khan perfect in female roles as well.
Aamir Khan is an actor who wants to do everything with perfection. I still remember one article where it disclosed that Aamir Khan searched for one full day for a cap for his movie Dil Hai Ki Manta Nahin. He always believe in perfection and that's why people would love to watch his movie (except Mela, Baazi and few more).
Recently I saw an ad of Aamir Khan for Tata Sky where he plays the role of female and male as well. He was certainly looking two different character in that advertisment and he was changing his tone, his body language so fast. That was really awesome.
In past also he performed few female characters. Certainly he is capitalising his chocolaty face. In past he did one ad of female as Manno Bhabhi for Coca Cola and this one is still remember in the Coca Cola ad campaign.
Even in Baazi one song was picturised on Aamir as female dancer and he was looking BEAUTIFUL in that song really ... with some awesome thumkas and all.
He is one of the best actor now we have in the film industry. In past his movie Lagaan was nominated for the Oscar and now Taare Jameen Pe is also going for Oscar.