Then you're going to LIVE for this video!!!
She's gone undercover -- and she OWNS it!
Ch-ch-check out the video for Birthday here (above)!
No walk of shame for Simon Cowell's latest lady!
Unlike their last date on which the new and somewhat unlikely couple were spotted making out at a West Hollywood restaurant, there were no witnesses to catch Tuesday night's action.
That's okay though because we have a pretty good idea of what went on…
Get it, Simon! LOLz!
[Image via Mavrix Online.]