Yes, it's the long awaited sequel to the first episode where Ivy took 2 gungings... available here (https://umd.net/download_info/tables-are-turned-on-revenge-is-sweet-h).

Having been cajoled into gunging herself when a contestant doesn't turn up for her House Party show (in the aforementioned Part 1, above) as we start this episode, Ivy hopes her humiliation is over. However the director points out that all the messy supplies are left, and they need to have footage for the show... and so poor Ivy has to cover herself with all the mess that she had been looking forward to using on the contestant.

Her beautiful shoes / heels get completely destroyed. Halfway through she loses the scant protection afforded by her bodysuit and ends up naked, and then, at the very end, when she is completely humilated and embarrassed, the director reveals it was an end of series prank... there never was a contestant, they just wanted to see her trashed!