Why Did Rihanna Lipsync “We Found Love” On X Factor? Is She Pregnant?

As someone who has seen Rihanna perform amazingly live, I am baffled why she lipsynced "We Found Love" on X Factor last night.

There was dancing.  There was pyro.  All stuff she would do in her 2 hour show earlier this year without lip synching.

For the past couple of weeks, she has been on tour overseas and cancelling shows overseas for an illness that her people have said was the flu.

Others through my Twitter account have been telling me that Rihanna is pregnant.  I blew off those rumors...until last night.

I am baffled by her lip synching on the show while all the solo performances on the show are performed live.  Doesn't exactly seem fair, does it?

So, why do you think Rihanna lipsynched?-DocFB

Diagnosis:  We found....her backbround music higher than her.....