Yesterday, we showed you the three outfits we covet most from the Lanvin for H&M look book in anticipation for the collection's debut in stores tomorrow. But our love affair with the French fashion house began long ago. Celebrities such as Blake Lively, Rihanna, and Natalie Portman have all worn the label's super feminine and luxe gowns to red carpet events. In honor of the brand's collaboration with H&M, we present our favorite celebrity Lanvin looks. And happy shopping tomorrow!

RACHEL MCADAMS

Rachel McAdams at the "Morning Glory" Premiere in New York on Nov. 7.

Photo: Getty Images

Rachel McAdams wore head-to-toe Lanvin to the premiere of her film Morning Glory in New York earlier this month. The actress chose a strapless gunmetal gray dress from the label's spring 2011 collection and paired it with lucite wedges.

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NATALIE PORTMAN

Natalie Portman at the the 2010 New York City Ballet Gala in New York on April 29.

Photo: WireImage

Natalie Portman attended the 2010 New York City Ballet gala on April 29 in a layered, red and beige Lanvin frock. This sheer number is our favorite Lanvin look, and Natalie played up the feminine feel by choosing a sparkly gold belt and simple strappy shoes.

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ZOE SALDANA

Zoe Saldana at the "Death At A Funeral" Premiere in Los Angeles on April 12.

Photo: Getty Images

Zoe Saldana also picked a red Lanvin number for the premiere of Death at a Funeral in Los Angeles. The draping on the shift shows off Zoe's figure, while the metal belt gives the loose number some structure.

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JENNIFER LOPEZ

Jennifer Lopez at the NEON Charity Gala in Moscow, Russia on May 24.

Photo: Getty Images

Jennifer Lopez wore a chocolate brown Lanvin garment to a charity gala in Moscow on May 24. The super drapey gown had a Grecian look, and J-Lo accessorized the dress well with a bold necklace and bracelet.

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BLAKE LIVELY

Blake Lively at Spike TV's "Scream 2010" in Los Angeles on October 16.

Photo: Getty Images

Blake Lively looked like she had just walked straight off Lanvin's spring 2011 runway when she showed up at the Spike TV awards in October. The actress wore a gray Lanvin dress to the event and styled herself exactly like the runway model, from the sleeked back bun to embellished nude heels. This was definitely one of our favorite dresses!

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JESSICA ALBA

Jessica Alba at "The Killer Inside Me" Premiere in Paris on June 24.

Photo: Getty Images

Jessica Alba chose a dark green halter dress from the label's fall 2010 collection for the premiere of her movie The Killer Inside Me in Paris on June 24. The mini had sleek gold trimming on top and gathered ruffles at its side—so romantic!

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RIHANNA

Rihanna leaving the Record Plant in Hollywood on July 19.

Photo: Pacific Coast News

The one-shoulder look is a classic Lanvin silhouette, and Rihanna rocked it in a black leather frock in Hollywood last July. The exaggerated sleeve gave the dress great volume, and the pop star balanced the shape with basic, nude pointed-toe pumps.

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CAREY MULLIGAN

Carey Mulligan at the Screen Actors Guild Awards in Los Angeles on Jan. 23.

Photo: WireImage

Last January, Carey Mulligan walked the red carpet at the SAG awards in a strapless, red Lanvin gown which had a sparkly bow pin at the waist. The floor-length dress showed off Lanvin's trademark ruching and draping details, and Carey looked regal in the gown.

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HILARY DUFF

Hilary Duff in Beverly Hills on July 15.

Photo: Splash News

Hilary Duff added high fashion to her little black dress when she paired it with Lanvin's beige, chain strap pumps while out and about in Beverly Hills over the summer.

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ANNE HATHAWAY

Anne Hathaway at the Drama Desk Awards in New York on May 23.

Photo: Getty Images

Anne Hathaway wore another one-shoulder Lanvin outfit to the Drama Desk Awards in New York last May. The black jumpsuit is from the label's spring 2010 collection, and Anne rocked it with matching black pumps. We also love how her curly hair and red lip add a touch of old Hollywood glamour to the ensemble.

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Which look is your favorite?