It was announced back in June that the actress had signed up to play a full-time character in the Channel 4 soap later this year.
© Rex Features / David Fisher
Kirsty-Leigh Porter
© Lime Pictures
Kieron Richardson as Ste Hay
Hollyoaks' executive producer Bryan Kirkwood exclusively revealed to Digital Spy last month his plans to introduce Ste's sisters and build up the Hay family.
He said: "Ste is undoubtedly one of our most important characters, and I'm so impressed with everything Kieron has done in the role. He's become a real star in the past few years.
"I was conscious of the fact that Ste was languishing on his own with no family around him, so that's something we're going to change by bringing in Ste's sisters. Ste's story with Pauline is just the start of a massive journey for the character.
Porter is known for her roles as Roz Fielding in Emmerdale and Zoe Willson in Coronation Street.
Digital Spy Soap Scoop video - press play below to watch Amie Parker-Williams reveal gossip on a murder scheme in Emmerdale, huge trouble for Karl in Coronation Street, a feud escalating in EastEnders and a surprise arrival in Hollyoaks.
