is attending a wedding reception with this woman:
 

Since they're sitting at a table together, it's easy to assume that they aren't actually TOGETHER together.  You might think that they're family, or that she's the daughter of an old friend.
Then they start dancing.  Hmm, could still be harmless.
Then they start grinding.  OK, maybe he's a dirty old uncle.
Then he puts his hands all over her behind.  Also, as he does it he looks straight at the band, as if to say:  "Yep.  She's with me.  THIS IS THE WOMAN I'M AT THE WEDDING WITH."  So.  Is she:

A) A Trophy wife
B) An escort (A and B assume that he's got lots of money)
C) Nuts
 
Let me make it clear:  this girl looked SO MUCH like Denise Richards that until she passed us on her way to the bathroom, DC thought it WAS Denise Richards.  The old guy wasn't as good-looking as Hal Holbrook, though.