The trainee doctor wore a gorgeous floor-length gown to the Caudwell Children Butterfly Ball held at the Grosvenor Hotel in London on Thursday night (15 May).
We're used to seeing Emily's insanely long hair straight and loose, but yesterday she showed she does an updo just as well, tying it back in a chic style. Gorgeous!
Emily and Peter were seen sharing a laugh as they walked the red, or should we say, purple, carpet together, before mingling inside with the star-studded guest list, including Peter's pal Amy Childs.
Peter has been an ambassador for Caudwell since 2008 and hosted last night's event.
Speaking ahead of the gala, he said: "Over the years I've been fortunate enough to meet some of the children and families who have been helped by this wonderful charity and seen I've seen the truly life changing difference they make.
"Every penny of the money raised at the Butterfly Ball goes to help disabled children so I'm pleased to help in any way I can."
It was the second night out this week for Emily and Pete, following the launch of Peter's new album Big Night on Wednesday (14 May).
Emily supported Peter at the glitzy event, held at Stamford Bridge in London, where Peter and his 10-piece band showcased tunes from the record.
His latest release was inspired by a visit to New Orleans a love for artists like Elvis Presley and Stevie Wonder. Among the tracks featured on it is 'Kid', the lead song from DreamWorks' animation Mr Peabody and Sherman.
Emily, meanwhile, generally prefers to keep a low profile as she concentrates on her medical studies and, now, the couple's daughter Amelia, who was born in January.
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Watch Peter's music video for 'Big Night' below: