Jessica Simpson Latest Pregnant Star In Stilettos

Feb. 28, 2012— -- intro: Even with her huge baby bump, Jessica Simpson is sticking to her heels.

The pregnant singer recently stepped out to do a bit of shopping in towering platform heels. She coordinated brown sky-high peep-toe shoes with a suede handbag and long rust-colored dress.

Fortunately, she had an assistant with her to tote around the bags she collected during a shopping excursion at Saks Fifth Avenue in Beverly Hills.

The 31-year-old pop star and actress, who is engaged to NFL player Eric Johnson, told Us Weekly she had no intention of going lighter on her feet.

"I'm probably going to deliver my baby in these [4-inch YSL heels]," she joked to the magazine.

Stilettos for pregnant women are not inherently dangerous, according to doctors. But when a woman's weight and shape change during pregnancy, so does her center of gravity. Because of this, she may be more prone to falls, falls that could have dire consequences. Otherwise, a lot of the risk is to her own comfort.

Dr. Manuel Porto, professor and chairman of the department of obstetrics and gynecology at the University of California Irvine Medical Center, also said that most pregnant women use an arched back posture to accommodate the change, which often leads to low back pain. Wearing high-heeled shoes and boots can exacerbate the problem, especially as feet start to swell in the later months.

"Most obstetricians recommend that patients wear flat shoes or those with less than a two-inch heel, especially in the third trimester," Porto said.

Try telling that to these celebrities. Click through to see the list of stars who won't let pregnancy interfere with fashion.

ABCNews.com's Mikaela Conley contributed to this report.

quicklist: 1category: title: Victoria Beckhamurl: text:

After giving birth to her fourth child, daughter Harper, last July, Victoria Beckham was seen sporting -- gasp! -- flats around town instead of her usual towering heels, reportedly after she had suffered a slipped disc.

The former Posh Spice, who has been known to tool around town in five-inch stilettos, wore high heels even in the late stages of her pregnancy -- but not without cost. It's presumed that heels are to blame for her slipped disc and that she is now under doctor's orders to wear flat shoes.media: 15800637

quicklist: 2category: title: Beyonceurl: text: After announcing on the red carpet of the MTV Video Music Awards that she was expecting her first child, Beyonce later rocked the stage in a pair of high heels while performing "Love on Top!" At the end of her set, she opened her sparkly tuxedo jacket and rubbed her obviously swollen belly.

The singer continued to sport heels right up until the birth of her daughter, Blue Ivy, in January. Days before, on a night out with husband Jay-Z, she wore "sky-high heels," a source told People magazine. "It was really impressive for an enormously pregnant woman. She looked like she was about to give birth."media: 15800820

quicklist: 3category: title: Amanda Holdenurl: text:

Soon after announcing that she was expecting her second child, English actress and "Britain's Got Talent" judge Amanda Holden was photographed wearing a pair of sky-high heels that would make Beckham proud.

Despite losing her last pregnancy in the seventh month, Holden, who stars in the West End production of "Shrek the Musical," did not appear to be exercising caution with her footwear. "This time I just know everything is going to be fine," she was quoted saying in the U.K.'s Daily Mail last fall. Holden did run into complications giving birth to her second daughter in January, but both mother and baby reportedly ended up fine.media: 15800647

quicklist: 2category: title: Rachel Zoeurl: text:

Rachel Zoe hardly skipped a beat when she became pregnant with her first child.

For an afternoon on the town in Los Angeles with her husband and friends, the celebrity stylist rocked thigh-high stiletto platform boots, along with a belted black shirt-dress, and knit bomber jacket. Fashionista Zoe announced at the time that she did not even own a single pair of flat shoes, were she to ever want to wear them. But since giving birth to Skyler, Zoe ditches her heels whenever she has her tot in tow. media: 14458453caption:related: 12868848

quicklist: 3category: title: Kate Hudsonurl: text:

Expecting her second child, Kate Hudson sported on-trend nude Christian Louboutin peep-toe heels on a number of occasions.

For her appearances on "The Ellen Degeneres Show" and "Jimmy Kimmel Live," she paired the towering heels with an ultra-chic baby doll dress with blue embroidery. Later, in the final stretch of her pregnancy, she once again donned the sky-high heels for a charity dinner. media: 14458464caption:related:

quicklist: 4category: title: Alicia Keysurl: text:

When Alicia Keys arrived on the concert stage for "Good Morning America" four months pregnant with her first child, she wore a beige jumpsuit and striped stilettos.

A couple of weeks later she donned a pair of five-inch heels while performing at the Essence Music Festival; this time she took a tumble. Luckily she landed on her bottom. She and the baby were fine.media: 15800626