Mike Marsland/WireImage

WHAT SHE WORE An RM by Roland Mouret mermaid gown and Neil Lane diamonds

WHERE The London premiere of Avatar

WHY WE LOVE IT Zoe Saldana was all movie star in a textured silver gown with a flawless fit. For a more forgiving take on the spotlight-stealing look, try a design with an A-line skirt.
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Zoe Saldana

Zoe Saldana in RM by Roland Mouret