Pretty Little Liars alum Shay Mitchell showcased her bourgeoning baby bump in a glittery silver mini-dress to pre-tape the ironically titled Watch What Happens Live in Manhattan on Tuesday.The Canadian 34-year-old - who announced she was expecting her second child on February 7 - paired her plunging frock with a gold jacket and silver strappy stilettos selected by stylist Monica Rose.Hairstylist Danielle Priano coiffed Shay's (born Shannon) wet waves and make-up artist Ash K. Holm fully contoured her complexion.