Posh used to sport a red lip often when she was in the Spice Girls but since the group disbanded she normally glams up with a lick of nude lip.
Victoria, 46, also posed up a storm in a sexy black vest top, with key-hole design – a stark contrast to her normal chic and stylish clothing choices.
The fashion designer showcased a hint of cleavage in the selfie snap, which she took from above her.
Victoria, who shared her post to promote her make-up range, paired her top with a pair of dark skinny jeans, as she allowed her brunette tresses to cascade down her shoulders.
She told her fans: “A rare red lip moment!”
Her followers rushed to shower Victoria with compliments and tell how her post reminded them of her time in the Spice Girls, who she last performed with in 2012.
One wrote: “Red suits you, you look like you did in Spice Girls you don’t age.”
Another said: “You should go back to wearing more bold colours, they suit you!”
A third gushed: “Looking fabulous VB!”
“Indeed, this red lipstick looks perfect on the lips of a beautiful woman”, a fourth added.
Earlier this month it was revealed the Spice Girls want to play in the USA for their 25th anniversary tour.
It was also revealed they wish to bring Victoria, who oped out of their 2009 reunion gigs, back to the band to perform.
Sporty Spice Melanie C revealed how the band plan to finally play Stateside after failing to agree gigs during last year’s shows.
She says: “We love being in the USA and have had so many great times there doing TV shows and promotional stuff. And we so want to get back there.”
And Victoria, 46, is reportedly being wooed to return to the Spice Girls for their anniversary tour – and likely farewell outing.
When asked if she was “persuadable”, a laughing Mel admits: “We are working on it.”
The band’s return to America, where they enjoyed huge success in their 1990s heyday, would be their first show in the States since playing Hartford, Connecticut, in 2008.