Miriam Shor (AKA Diana Trout) tells us how Hilary Duff hid her bump on 'Younger'

Kelsey Peters has her wardrobe down pat.

By Katie Stow

In case you missed the news, Hilary Duff is well and truly pregnant with her second child. After giving birth to her son, Luca, over six years ago, Hilary and her new boyfriend, Matthew Koma, are expecting a little baby girl!

While that's great news in her personal life, it caused a bit of a kerfuffle at work for Ms. Duff as she was filming for the fifth season of Younger at the time. In the show, Hilary plays the role of Kelsey, a young gun in book publishing who is definitely NOT pregnant, so the wardrobe department had a bit of a big task on their hands to cover up her bump.

When chatting with the oh-so-wonderful Miriam Shor — who, of course, plays Diana Trout in the show — she revealed one of the tricks the wardrobe department used to hide Hilary's pregnancy.

"In the last episode," Miriam told COSMO, "I remember her wearing this brown dress which had ruching on the side. It looked fierce — she always looks phenomenal — and I was like are you kidding me!? She looked amazing, how is this your second child? I'm in awe of you."

Miriam also went into detail about how much of an angel Hilary was on set, despite probably feeling wretched and dealing with morning sickness during filming.

When we asked Miriam whether she'd been trying to push any baby name ideas onto Hilary, she responded in the most Diana Trout-manner possible, saying, "I mean obviously she'll want to name the child after me!" Before revealing that she has a much more intense plan ahead for the baby…

"I mean I don't care about the baby's name as long as I'm the baby's favourite. That's really all I care about, so I'll just grab that little smoosh and whisper in her ear 'I'm your favourite, always remember that,' constantly."

Never change, Miriam. Never change!

You can catch the latest season of Younger on Stan now, but in the meantime, take a scroll through all the times Hilary Duff hid her growing baby bump on set: