Some women cover up more during pregnancy.
These stars do the opposite.
Click through to see who has stripped down to show off their baby bump.
Christina Aguilera: 2 for 2
"As a woman, I'm proud to embrace my body through all stages of life," Aguilera told V Magazine. She's not kidding - this is the second time she's stripped down to her birthday suit while pregnant.
(Brian Bowen Smith/VMagazine.com)
The First Time
Christina posed for Marie Claire while pregnant with her first son, Max, in Jan. 2008.
Miller posed in Allure magazine showing off her baby belly. "I always felt, even before I got pregnant, that it's better to accentuate your curves," she said.
"It's important to really show off the belly," Miller said. "For some reason, for me, from the side, it looks the biggest, so that's what I tried to do."
"I had never even owned a scale before, but gaining weight is part of charting your progress," she told Allure. "Yes, I was seeing numbers I'd never seen before, but I let go of that because I had a new goal and focus."
Demi Moore was one of the first actresses to embrace her pregnant naked body for the cover of Vanity Fair magazine in Aug. 1991.
Many stars have followed suit since.
The super model has a stunning body whether she's pregnant or not.
Can you believe she was seven months pregnant when she posed for this cover in 1999?
The TV Host turned entrepreneur wore a sexy top that bared her bulging belly on the April 2002 cover of Los Angeles Family magazine.
The mom of four posed in sexy lingerie for the Dec. 2005 issue of Vitals Woman magazine when she was pregnant with her first son Henry Gunther.
Days after Britney posed for her nude bump shots some of the photos leaked all over the web.
But fans had to wait till the Aug. 2006 issue of Harper's Bazaar hit stands before they could see all the shots.
The former "Girls Next Door Star" graced the cover of In Touch looking like she was about to pop in Oct. 2009.
Oops... I Did It Again
Harper's Bazaar wasn't the only magazine to get a pregnant skin baring Britney on the cover.
The songstress also posed for Q Magazine's Nov. 2006 cover.
The Czech model went semi-nude for her Italian Vanity Fair cover shots in Feb. 2007.
The Italian actress bared her baby bump twice on magazine covers.
The first time, in 2004, Monica posed for Vanity Fair in protest against an Italian law that prevented the use of donor sperm.
This pic shows the model turned actress when she went nude again for the April 2010 issue.
The European model posed for the German edition of Vogue while pregnant with her third child in May 2010.
She told the mag, "I love being pregnant."
"You can do whatever you want. You don't feel guilty, because I used to feel guilty about having a day off," she admitted. "Before my pregnancies, I was someone who had to watch their weight. I had a personal trainer, I was working out, I would never eat anything sweet... When I was breast-feeding it just came off. I can eat whatever I want. If I don't eat enough, I will lose weight."
Some stars love to show off their bodies, regardless of the trimester.