The 24-year-old stepped out in burnt orange heels with red soles – which appeared to be at least six inches high – for a shopping trip in downtown Beverly Hills.
The actress-turned-singer looked great in a pair of dark denim maternity leggings and an asymmetric cut top as she enjoyed a spot of retail therapy with her husband Mike Comrie.
The star refused to compromise her style reputation as she accessorised with chunky bangle bracelets and funky silver drop earrings.
But Hilary’s burgeoning bump could clearly be seen poking through the ensemble as she tottered around in the staggeringly elevated footwear that most women who aren’t pregnant would think twice about wearing.
Duff and her NHL partner, 31, are expecting their first baby, a son, together in March.
By the late stages of pregnancy, most mothers-to-be are happy to put their feet up and take advantage of any opportunity to rest before the big day.
But it appears celebrities like Jessica and Hilary aren't willing to slow down yet.
However the 31-year-old may be risking serious injury by wearing extremely high heeled shoes.
Wearing high heels, particularly during the later stages of pregnancy, can increase the risk of a slipped disc as they distort the shape of the spine and place further pressure on the lower back and neck, which are already under strain.
Victoria Beckham famously paid the price for her shoe addiction earlier this year.
She was in such pain from a slipped disc that she struggled even to lift her baby daughter Harper Seven after her birth in July.
Ice and fire