Dancing On Ice fans were in for an extra treat during Sunday night's show when Colin Jackson's sister popped up on screen.
Viewers were bowled over to find out that the Olympic hurdler has a famous older sibling.
The 52-year-old sports star was smiling alongside his professional skating partner Klabera Komini when his proud big sister appeared to send them her best wishes for the ITV celeb skating contest.
Tweets came flooding in as fans recognised her as actress Suzanne Packer.
Suzanne, 58, is known for playing the role of clinical nurse manager Tess Bateman in the BBC medical drama Casualty.
She was in the show from September 2003 to August 2015.
Suzanne returned to the show as a guest for the 30th anniversary in 2016.
Recently she starred in the ITV miniseries The Pembrokeshire Murders.
One viewer tweeted: "Me & Mum: 'Colin’s sister looks like Suzanne Packer!' *Googles it* Me: 'oh, it is!'
"Never knew that!"
"Did not know Suzanne Packer was Colin's sister," said another DOI fan.
"Wait I had no idea that Suzanne Packer and Colin Jackson were siblings omg," gasped another.
"Omg am I the only one who didn’t realise Suzanne Packer is Colin Jackson’s sister?" asked another.
And another tweeted: "How have I just found out that
@ColinJackson is the brother of Tess from Casualty?"
Suzanne tweeted to Colin: "Good luck @ColinJackson you know I'll be watching and cheering you on."
And she said ahead of her cameo on the show: "I'm on Dancing On Ice any minute now! Not skating of course."
