Hollywood actress Jessica Alba, known for flaunting her fabulous figure in "Sin City" and "Into The Blue", is donning unflattering attire in her latest film "An Invisible Sign of My Own".

Thesun.co.uk reports that the film is the screen adaptation of Aimee Bender's bestseller by the same name.

Alba plays Maths whiz Mona Gray, whose ordinary childhood comes to pieces when her father is stricken with a mysterious illness. The film also stars Chris Messina.