Kate Middleton uses strapless shapewear, bras sewn into dresses to ensure underwear lines aren't seen: Expert

“Underwear and bras are also considered private intimate wear, and for royals to put intimate apparel on display would simply not be done,” said Myka Meier, who trained with the Queen’s Royal Household

Clever trick Kate Middleton uses to hide bra straps and knicker lines - Irish Mirror Online

How Kate Middleton Avoids Wardrobe Malfunctions So Well

Kate Middleton Hack To Hide Bra Straps & VPL

Clever trick Kate Middleton uses to hide bra straps and knicker lines - Irish Mirror Online

Kate Middleton's lingerie tricks to avoid wardrobe mishaps including sewn-in knickers - OK! Magazine

How Kate Middleton makes sure she never has bra and knicker lines on show by using shapewear and sewn-in bras

Kate Middleton style: How Duchess hides her bra and underwear lines

How Kate Middleton Avoids Wardrobe Malfunctions So Well

Kate Middleton style: How Duchess hides her bra and underwear lines