Tiffany Haddish performs at Seth MacFarlane’s Christmas Concert

The actress/comedian was in attendance at SMF’s annual Christmas party Saturday night at the Pacific Design Center in West Hollywood, where the man of the hour shared the stage with TH at one point to let her do her thing… that is, an original cabaret-style song .

Check it out… In the video, which was obtained by TMZ, you can see Tiff singing a sexy old school song that she said would make Sexy Red and Lil’ Kim blush — AKA, this one is naughty.

The audience sure loved it…why wouldn’t they? The truth is, Tiffany absolutely killed it. Now, of course, Seth himself sang some songs too, and yes — he rocked the house with his old Sinatra style crooning too… just like he always does.

It’s interesting that Tiffany keeps this going at the club — she brought up something else just like this a few weeks ago during her party Birthday celebration, and it seems to indicate that she is engaged in this type of performance. We know for a fact that she’s been focusing on music lately.