0503_best_launch The stars were definitely shining this week! From luncheons to galas, Hollywood’s hottest starlets had plenty of opportunities to strut their stuff.

Carrie Underwood stole the spotlight at the Time 100 Gala on Tuesday, rocking a silver sequined gown by Claire Pettibone, featuring pink and red roses on the skirt's black tulle overlay, which she paired with a shimmery silver clutch. The country singer wore her blonde locks down in loose vintage-style waves and opted for a more dramatic makeup look with a sexy smoky-eye and glossy pink lip. 

Sarah Jessica Parker wowed in white at the AOL Digital Content NewFront event on Tuesday, sporting a white cap-sleeved Alexander McQueen dress with a pale-pink and gray tulip print, metallic-blue heels from her SJP collection and simple silver jewelry. The former "Sex and the City" star kept her makeup to a minimum and styled her luscious brunette locks with soft waves. 

Reese Witherspoon also sizzled on the red carpet this week at the Colleagues' 26th Annual Spring Luncheon in Beverly Hills on Tuesday, wearing a sleeveless green and blue floral-print silk dress by Oscar de la Renta and nude Manolo Blahnik heels. The mother-of-three styled her blonde tresses with loose curls and accessorized her ensemble with an emerald clutch.

Who do you think was the best dressed star this week? Sound off below, and click "Launch Gallery" above to see more polished looks!

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