Genelia D'Souza is spontaneous while Sonam Kapoor believes in doing her homework for every scene, says Imran Khan, who romanced the former in his debut film and has teamed up with the latter for the forthcoming "I Hate Luv Storys".

"The styles are so different. Sonam is a very prepared actor. She will come on set and say how she wants to do the scenes. She knows her every bit, " Imran told in an interview.

Imran plays a womanizer in "I Hate Luv Storys". Produced by Dharma Productions, it will be released worldwide Friday.

The actor teamed up with Genelia in 2008 hit movie "Jaane Tu...Ya Jaane na".

Commenting on her, Imran said: "Genelia is very spontaneous. In different scenes, she will do different things. So for Genelia we used to wait to see what she would do. She will always do something to surprise you. It was lively and goes well with her character in 'Jaane Tu...'"