Natalie Portman's pregnancy style

Being a celebrity means attending many events - and wearing many dresses. And if you're pregnant, like Oscar winner Natalie Portman, not just any dress will do.

Here's a look at how the actress showed off her baby bump on the red carpet.

In this photo, Portman, in Rodarte, arrives for the 83rd Annual Academy Awards on Sunday, Feb. 27, 2011, in Los Angeles.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy

Portman arrives at the Spirit Awards in Santa Monica, Calif., on Feb. 26, wearing a neon yellow and beige dress from Givenchy Couture.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

John Shearer/Getty Images for Vanity Fair

Portman attends Vanity Fair Campaign Hollywood 2011's Richard Mille Toasts Fox Searchlight Films held at Bar Marmont on Feb. 24, wearing a white, long-sleeved babydoll dress from H&M. The dress, made of 100 percent recycled polyester, retails for just $49.95.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

At the Academy Awards Nominees Lunchon on Feb. 7, Portman chose a blue Lanvin dress paired with pink pumps.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

At the Screen Actors Guild Awards on Jan. 30, she wore a long, white Azzaro column gown, paired with jewelry from Tiffany & Co.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

Portman wore this black Michael Kors halter gown with Cartier jewelry and Aldo shoes to the 63rd Annual Directors Guild of America Awards on Jan. 29 in Hollywood, Calif.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

While attending the Fox Searchlight 2011 Golden Globe Awards Party on Jan. 16, Portman chose a gray Azzaro dress, which she paired with silver flats.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

On the Golden Globes red carpet, Portman wore a pink gown from Viktor & Rolf with a hand-embroidered Swarovski crystal rose and jewelry from Tiffany & Co.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

Portman walked the red carpet in a one-shouldered, black-and-white gown by Gianfranco Ferre, paired with Fred Leighton jewelry, at the Critics' Choice awards on Jan. 14.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

Portman chose a cobalt blue dress by Michael Kors with black pumps and a matching clutch for the Eleventh Annual AFI Awards on Jan. 14, 2011.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

At the premiere of her film "No Strings Attached" on Jan. 11, 2011, Portman wore a black and beige maxi dress from Vena Cava.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

Portman posed backstage at the 22nd Annual Palm Springs International Film Festival Awards Gala on Jan. 8 in a Vionnet dress with a golden collar and cuffs.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards

Just a week and a half after Portman announced she was pregnant, she presented an award (alongside her "No Strings Attached" costar Ashton Kutcher) at the People's Choice Awards on Jan. 5 in a ruffled blue shift dress from Jason Wu.

PICTURES: Natalie Portman
PICTURES: Six decades of Oscar fashion
SPECIAL SECTION: The Academy Awards