Duchess of York -- Royally Searched

10/14/2008 2:02 PM PDT BY TMZ STAFF
For the OG Fergie (right) -- not the Black Eyed Pea chick -- being a former member of the British Royal family comes with perks ... like getting patted down by LAX security (left).

The former Weight Watchers spokesperson, who turns 49 tomorrow, was picked by TSA for a body search on Monday.

Chances are the scariest thing Fergie was hiding was a chocolate bar.