The 21-year-old beauty - niece of legendary sprinter Linford Christie - joined 200 scantily-clad models daring to bare almost all at the Harrogate Lingerie and Swimwear Exhibition.
Rachel - who became the first ever black Miss England earlier this month - hopes to represent Great Britain in the 400m at the 2012 Games.
And she showed she is in great shape when she helped unveil new collections from 300 of the world's leading lingerie and swimwear designers - as our EXCLUSIVE video shows.
Buyers from Britain's top High Street stores flocked to the three-day event for a sneaky peek of the frillies they will be stocking next year.
As one visitor admitted: "There is a lot of flesh on display. All the models are extremely professional - but it can be tough to keep your mind on the job!"
*** LIKE THIS VIDEO? SEE MORE HOT BABES BARING ALL... ***
