Actor Sobhita Dhulipala, recently seen in Geethu Mohandas’s Moothon and the web series Made in Heaven, has landed a key role in Mani Ratnam’s upcoming Tamil film Ponniyin Selvan.Sobhita took to Instagram on Saturday to share the first look poster of Ponniyin Selvan, without revealing officially if she’s on board. However, sources from the film’s unit have confirmed that she has been signed. This project, which is being made on a lavish budget, marks Sobhita’s maiden collaboration with Mani Ratnam.The film’s first look poster was unveiled in January. The poster features a sword with a golden hilt and it bears the emblem of the Chola kingdom along with the words ‘Beginning of the Golden Era’.A few months ago when reports emerged that Vairamuthu has been signed for Ponniyin Selvan, netizens took to twitter to question Mani Ratnam on his ethics to sign the veteran lyricist after being accused of sexual harassment by singer Chinmayi.While the makers and Ratnam are still silent over inclusion of Vairamuthu in the project, recent reports suggest that the award-winning lyricist is no longer part of the project. No wonder the makers have not mentioned the lyricist in the poster.Actor Aishwarya Rai Bachchan, who has already confirmed that she is part of the project, will be seen playing dual roles in the highly anticipated project, according to trusted sources.