Must pay more attention in Doctor Who viewings! (mild spoilers for SoD)
Martha gets home.
This is what she looks like.
No more than half an hour later, she looks like this.
credits for caps go to time-and-space.co.uk
WTF? When did THAT happen? Terrible Continuity error there, Mr Wardrobe Dept! It's not like she's even grabbed a different jacket, her WHOLE OUTFIT (bar the necklace) is different! How did that sneak by?
On the plus side, it clearly proves the hot OT3ness going on off-screen ;P.