Titled "Equestrian Bathhouse 3"
From the artist:

Well this is certainly a turn of events! Tits, butts and cocks have grown to massive proportions and everyone is giving in to their baser desires. Some of them are even with foal and lactating! It looks like Vexin is back at it again with her tricky, transformation potions and spiked the bath water. Oh well, nobody seems to mind and everyone's actually enjoying themselves so lets just let this play out.

Part 3 of an excellent set of commissions from scionofnight. These big pieces are a lot of work and I love the challenge. It's also great having all three together so you can really appreciate everyone's transformations.