Jessica Chastain joined her co-star Brad Pitt on the red carpet for “The Tree Of Life” LA Premiere.

The new girl on the block opted to wear a Roland Mouret one shoulder gown.

You know how much I love to see reds wearing green, so you won’t be surprised to know that I think this Persian green gown is a divine colour for her.

I also love the pop of chartreuse.

As we have come to expect from Roland Mouret his mermaid gown gives the actress a gorgeous silhouette.

I think this is my favourite look from her since I discovered her back in December.

Jack Vartanian jewels completed her look.

Credit: Zuma & Getty