On the topic of holiday friendships, the 30-year-old Victoria star reflected on the time she met the Welsh singer on a family holiday as a child. The pair hit it off ended up doing karaoke together, only for Jenna to be blind-sided by her new friend's talent...
"I met Charlotte Church in Ibiza when we were 12 years old and it was before all of her success," revealed Jenna. "She was singing in the evenings at the hotel just with her family, and we became really good friends.
"At this time I didn't really know that she was such a great singer. So the karaoke was on and she said 'come up and sing with me' and it was 'New York, New York' or 'Wake Me Up Before You Go Go' and I was like 'yeah, great.' I stood on stage and suddenly 12-year-old Charlotte started to sing opera next to me – I absolutely died."
"I don't think I've ever done karaoke since," she added.
We don't blame you, Jenna!
The former Doctor Who star also shared her thoughts on seeking revenge (Taylor Swift style) and celebrating milestones.
Season two of Victoria airs on ITV every Sunday at 9pm.