Come Saturday morning, Kat was still in her PJs and slippers as she chatted up some friends. We're hearing the "I dos" are going down sometime on Saturday, but don't have confirmation on that just yet. Makes sense though ... rehearsal dinner's traditionally the day or night before.
Patrick Schwarzenegger was seen nearby, as was Bobby Shriver and Patrick's GF, Abby Champion -- so, as expected ... a full-blown family affair.
You'll recall ... Chris popped the question to Katherine back in January of this year, and she said yes. They've moved quickly, to say the least. As they say ... when ya know, ya know.
This will be Chris' 2nd marriage, and Katherine's first. Congrats!!!