Jessica Simpson "accidentally" revealed that she was expecting a baby boy with her fiance Eric Johnson.
Sharing her pregnancy woes, singer-fashion designer Simpson called her second pregnancy "totally different" from the first one, reported Radar online.
The 32-year-old said, "The crazy thing is I never knew a wiener could make me nauseous. Well, I guess I just told the world that I'm having a boy!"
Realising that she has made the big announcement, Simpson said "I can't believe I just did that, that was not planned... I just did it so crude, I feel awful!"
Simpson later tweeted, "Accidental announcement tonight on @jimmykimmel(sic)."
The couple already have 10-month-old daughter Maxwell.
