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Mad for Missoni!

Some of Hollywood's most stylish stars hit up a special shopping event for the new Missoni for Target Collection in New York City on Wednesday.

Emma Roberts, 20, posed for pics in her own Missoni cardigan, which she paired with a white T-shirt and gray jeans. "I've been seeing a lot of purple," the star told Us Weekly of her fall fashion must-haves. "I'll be looking for Missoni for Target purple items tonight!"

Camilla Belle, 24, wore a geometric-print multi-colored dress by the Italian fashion house, as did Matthew McConaughey's model girlfriend, Camila Aves, 24.

Other A-list guests included super stylist Rachel Zoe, 40, in a loose, caftan-style number and Elizabeth Olsen, 22, (Mary Kate and Ashley's sis) in a cute sweater dress.

PHOTOS: Trend Watch: Celebs in jumpsuits

The collection, which is Target's biggest designer collaboration to date, is set to launch on September 13 and prices will range from $2.99 to $599.99, though most items will retail for less than $40.

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