Worth the Weight

updated 03/09/2009 AT 01:00 AM EDT

originally published 03/09/2009 AT 01:00 AM EDT

Miley's Zuhair Murad dress weighs
12 lbs.

Her Zuhair Murad silk tulle confection (studded with 10,000 Swarovski crystals) may have weighed 12 lbs., but Cyrus told PEOPLE, "I wanted to feel beautiful."

Anne's Armani Privé gown weighs about
15 lbs.

Covered in paillettes and Swarovski crystals, her Armani Privé gown was too constricting to dance in. (She changed into a fluffy Monique Lhuillier dress for her opening number with Hugh Jackman.)

Jennifer's Valentino Haute Couture gown is
10 lbs.

Aniston's Valentino Haute Couture gown was studded with 10 lbs. of beads. "The construction has to be genius for her to look that effortless," says E! fashion expert Jay Manuel.

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