Karen Gillan has posted online one of the first pictures of herself and Matt Smith in costume as Amy Pond and the Doctor - taken at their initial camera test.
The actress shared the image via Twitter on Tuesday, saying: "1st pic of Matt and I [sic] in character was released 4 yrs ago today [sic], but, I have the real one..from the 1st camera test".
Having already appeared in the show as a soothsayer in The Fires of Pompeii in April 2008, Gillan made her debut as Amy two years later in The Eleventh Hour on 3rd April 2010.
On 17th February 2010, the BBC released a montage shot featuring the duo to promote the start of Series 5, as reported by Doctor Who News, with the world having been given its first look at Gillan and Smith in costume seven months earlier, when an official image was released as filming began on the series - also reported by Doctor Who News.
It is currently unknown when exactly the test photo - shown below - was taken.