Buffed Up: Buff father-to-be Robbie Williams poses topless for all the world to admire

ROBBIE Williams wants us to know he's been hitting the gym hard as he awaits the birth of his first child. The Take That singer posted a topless snap of himself flexing his muscles on Twitter - perhaps because he didn't get a chance to show off his new body at the Olympics closing ceremony . Williams didn't perform with the rest of Take That as scheduled because he wanted to be with wife Ayda, who is expected to give birth any day now. The couple have revealed they are having a girl. Williams also tweeted a picture of his wife showing off her growing baby bump with the caption: 'My two girls!' Take That band mate Gary Barlow suffered a personal tragedy earlier this month when his daughter Poppy was stillborn. He was praised for his courage when he went ahead with the closing ceremony gig. Barlow was recently the target of a bizarre hate campaign by former UK Big Brother contestant Kenneth Tong, who posted a series of offensive tweets about the loss of Poppy just days after her death.