But Jessica Simpson revealed that she's expecting a baby boy during an interview on Jimmy Kimmel on Wednesday.
In typical Jessica fashion the news slipped out accidentally.
'The crazy thing is I never knew a wiener could make me nauseous,' she told the chat show host.
It's a boy! Jessica Simpson tweeted this picture of herself after letting slip that she's expecting a boy on Jimmy Kimmel on Wednesday
Oops: Jessica looks shocked when she realises that she just let slip that she is having a boy
That's hilarious: The singer laughed off the on-air mistake, saying: 'Well I guess I just told the world that I'm having a boy!'
The 32-year-old looked elegant in a little black dress from her new maternity line, paired with fuchsia pink high heels and a glamorous half updo.
But her most striking accessory was her large baby bump. Jessica fell pregnant with her second child when her daughter Maxwell was less than a year old.
The pop star and her fiancé Eric Johnson confirmed they were expecting their second baby back in December.