With Sienna's feelings for her on-off lover Trevor Royle as strong as ever, things get especially awkward when the tough guy ends up clashing with Ben right outside the ceremony just as Sienna arrives.
Turning a blind eye to Sienna's turbulent history with the Osbornes, Jack agrees to give her away as a favour to his old friend Ben. This leaves Sienna's daughter Nico to take on Jack's position as 'best man'.
Despite the tensions outside the venue, Sienna goes ahead and walks down the aisle, secretly glancing at Trevor out of the corner of her eye. Will she go ahead and exchange her vows with Ben, or does her future lie with Trevor?
Airs Monday, May 9th