There’s walking a mile in another’s shoes, and then there’s exchanging Los Angeles mansions. 

Brad Pitt, 59, and Aileen Getty, the 65-year-old philanthropist granddaughter of the late oil tycoon J. Paul Getty, have done an off-market home swap of their lavish California compounds. 

Getty has been freshly revealed as the buyer of the “Bullet Train” hot shot’s former megamansion, while Pitt scooped up the heiress’ Los Feliz home this month, Dirt reported.

The switch aligns with one source’s explanation that the A-lister was offloading the sprawling property, where he and ex-wife Angelina Jolie raised their six-kid brood, as he was “looking for something smaller” around LA, The Post previously reported. 

That’s certainly a relative desire considering the size of the multi-parcel behemoth he sold to Getty for $39 million: When Pitt bought the plot from Cassandra Peterson (also known as Elvira) for just $1.7 million in 1994, in consisted of a comparatively humble abode constructed by, yes, an oil baron in 1910. 

By the time of its sale late last month, Pitt had added several neighboring properties to its total 1.9 acres, which include a skating rink, a tennis court, a swimming pool, an enormous Koi pond, a skate park, a motorcycle garage, a ballroom and a movie theater. 

Getty’s upgrade is Pitt’s humbling, as her former 2,000-square-foot home — known as the Steel House — is set on a comparatively smaller .29 acres and has no ridiculous amenities to boast of, just lovely midcentury modern design. 

There are terrazzo floors, sliding glass galore, a pool, plenty of lushly landscaped outdoor space and two bathrooms. 

In exchange for his new striking 1960s-built three-bedroom, Pitt paid $5.5 million, according to Dirt. 

As with Pitt’s place, the Steel House is also second-generation celebrity-owned: Getty bought it from Maroon 5 lead guitarist James Valentine for $4.1 million in 2019.