These stylish trend-setters had a love affair with Lanvin and tried denim jackets in lieu of leather. And while every girl should have a jean topper in their wardrobe, it may be a little harder to obtain a Lanvin look. We mapped out how to get Dame Helen Mirren's show-stopping ensemble, below.

lanvin cameron diaz heels helen mirren uma thurman

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LADIES LOVE LANVIN:

Cameron Diaz received CinemaCon's Female Star of the Year award in Las Vegas while wearing a Roland Mouret "Cascada" one shoulder dress and Elizabeth and James linen blazer. We adore her belted look, and those Lanvin plexiglass wedge ankle strap sandals were the final touch of glam!

Helen Mirren was a vision in white at the premiere of her latest flick, "Arthur." The Dame wore an entirely Lanvin resort 2011 look composed of a taffeta maxi skirt and silk chiffon blouse. She even added Lanvin accessories: pearl and crystal bib necklace and quilted clutch!

Looks like Uma Thurman loves Lanvin! She recently wore a gold metallic coatdress from the French house, and hit the red carpet in another look straight off the runway. Thurman added a skinny belt to her long sleeve blouse and pencil skirt combo at a screening of "Ceremony."

kim kardashian emma roberts kate bosworth jean denim jacket coat elizabeth and james

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DREAM JEANIES:

Leave it to Kim Kardashian to be the chicest gym rat ever. The starlet -- who works 25 hours a day -- got in an early morning work out, Hermès Birkin bag in tow. We love her cozy knit scarf and hip shades with a casual jean jacket.

Emma Roberts supported Mary-Kate and Ashley Olsen by donning an Elizabeth and James "Sid" jacket at an event hosted by the twins. The actress wore the denim piece over an Isabel Lu maxi dress which she belted with a skinny red belt.

Kate Bosworth was spotted at Los Angeles International Airport wearing a casual denim ensemble, complete with sleek ballerina bun. She added a basic white tee and Burberry boots to complete her traveling look.

For more celeb copy cats, check out last week's trends.