Geri Halliwell has proved she's a first-class girl.
Publicising the Royal Mail's red letter day, the pop star showed off her curves in a purple wraparound dress.
She seemed oblivious as it slowly gaped open to reveal big Bridget Jones-style knickers.
V.G. move, Geri - we love flattering pants!
The teeny Spice was almost dwarfed by a pillar box as she hung on in her knickers.
A record 30 million stamps are expected to be sold in Britain today.
Source: Sky News
