Jamie McCourt likes to swim. That’s cool, right?

I mean, swimming is fantastic exercise, it’s relaxing, it’s clearly good for your skin, so what’s not to like?

I’m guessing that was the logic when Jamie plunked down an additional $14 million (that’s on top of the $21.25m purchase price) to turn the outdoor tennis court of the Holmby Hills mansion in the picture into an Olympic-sized indoor swimming pool with its own pool house, sauna, steam room, and massage room.

And while this would hardly be the only $30 million mansion in Holmby Hills, it might be the only one that’s only used for the pool.

That’s right. Post—separation, this 15,000 square-foot palace is being maintained by Jamie “exclusively for swimming,” according to Frank’s attorneys, while she lives in a separate beachfront Malibu mansion that used to belong to Courtney Cox and David Arquette (love must have been in the air!).

Of course, only having one olympic-sized swimming pool is like only having one pair of underwear, so Jamie’s been filing plans with the Malibu city office to expand the pool at that location and put in a snazzy wood deck and private cabanas.

Of course, none of this is cheap, which would explain why one of the centerpieces of the divorce proceedings is almost $750,000 a month in mortgage payments on their private homes.