David and Samantha Cameron were on hand to welcome the Queen and Prince Philip to Number 10 for a spot of lunch. Also present: Tony Blair, Gordon Brown and John Major. Which, having read Andrew Rawnsley's The End Of The Party, sounds... awkward?
Anyway, QE2 and Sam Cam synchronised their style clocks and both opted for summery turquoise and white looks. Sam Cam in a knee-length print shift and QE2 in a pleated turquoise skirt and matching hat, not forgetting the turquoise-trimmed white jacket.
What do you think of the leading ladies' style match? Too close for comfort or fashionably familiar?
Oh, and in case you are interested we've done a spot of detective work and found out that Sam Cam's dress is by Jonathan Saunders and is currently on sale at Matches for £495.