Woods decided she would use KAT's 25th birthday as an excuse to get him some very cool items to remember his mom -- including an unbelievable custom ring featuring the name "Jackie" decked out in gold and diamonds.
She also got him a fancy Louis Vuitton handbag with his mom's full name, "Jacqueline" painted on the side ... underneath a halo and a pair of angel wings.
Pretty touching gifts ...
There's more ... Woods also surprised KAT with a special golf outing at the legendary Torrey Pines course in San Diego.
She even got him a special golf-themed cake!!
The two have been dating for about a year -- and if you're wondering what KAT got Jordyn for her 23rd birthday back in Sept., those gifts weren't too shabby either!
We're talkin' 2 Birkin bags, a Chanel clutch and an autographed Michael Jordan jersey ... among other things.
"Thoughtful" and "rich" make for a pretty solid combination when it comes to presents!