Despite the fact he called her a "pig" in open court ... despite the fact he's STILL suing her ... Donald Sterling got together with estranged wife Shelly to celebrate their 60th anniversary on the beach ... and TMZ Sports has the shocking photo.
The two put their insanely nasty war on hold last weekend -- and bathed their bodies in the sun at the Balboa Bay resort in Newport Beach.
Multiple sources connected to the couple tell us they decided to get together to celebrate their 60th anniversary ... but they still consider themselves very much estranged.
As one source put it, "It looks weird from the outside ... but it's just the way they are."
Sure, Donald trashed the hell out of Shelly for the past couple of months ... but at the end of the day, his bank account is up $2 BILLION.
Can't stay mad at that forever.