The singer-turned-fashion designer – who has three sons with her soccer star husband David Beckham – hopes to fall pregnant with her first daughter later this year after the soccer World Cup in South Africa.
The 35-year-old star is thought to have become increasingly broody since her younger sister Louise has announced she is expecting her fourth child.
A source close to the family told The Sun newspaper: "Louise has just told everyone she is expecting and Vic has immediately become broody. She and David have always wanted a girl. He'd love more kids so it's great news."
Victoria's boys - Brooklyn, ten, Romeo, seven, and four-year-old Cruz – are already close in age to Louise's own children and Victoria is believed to be keen to keep this pattern up.
Meanwhile, it has been revealed the couple have donated almost £1 million over the past five years to help disadvantaged children.
Since 2005, the Victoria and David Beckham Children's Charity – which is run by Victoria's Jackie - has handed over £913,269 to disabled youngsters.
However, donations to the cause fell dramatically from £102,209 in 2008 to £11,917 last year.
Because of the cash shortage, the charity had to cut back spending from £335,502 to £32,474.
In the 12 months before April 2009, the couple still donated to 12 charities through their fund.
These included the Aids Mobility Centre – who received a £2,487 donation to help with their work providing specialist wheelchairs.