The actress's latest character has an unglamorous style

Jennifer Aniston has unveiled a rather dowdy new look.

The Friends star, 45 – who’s engaged to actor Justin Theroux – was snapped sporting a lank-looking brown bob and wearing no make-up in LA yesterday.

Jen wore pale baggy trousers, beige trainers and an unflattering loose blue jumper, which she covered up with a long dark cardigan.

But she’d only donned the unglamorous ensemble to film scenes for new flick Cake.

The black comedy sees Jennifer play Claire Simmons, a grieving mother who becomes fascinated by the suicide of a woman from her chronic pain support group.

Claire forms a poignant relationship with the late Nina‘s husband – portrayed by Sam Worthington – and struggles with her own personal tragedy.

Anna Kendrick stars as Nina, while other actors involved in the project include William H Macy, Meryl Streep‘s daughter Mamie Gummer and Chris Messina.

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Anna Duff