Lauren and Kirk dated for nine months in 2011, before briefly reuniting - and having a pregnancy scare - last year and it looks as though things could be back on!
An eagle-eyed onlooker saw Lauren and Kirk holding hands together earlier this week while at Lakeside Shopping Centre in Essex.
The source exclusively tells Reveal:: "Kirk and Lauren were strolling along outside Claire's Accessories and they were definitely holding hands.
"They weren't speaking but looked content and happy. It definitely appeared as if they are back together!"
This latest sighting of the former couple comes after TOWIE fans saw Lauren and Lewis Bloor break-up during Wednesday's Ibiza special episode.
Lauren was "disgusted" to discover Lewis had cheated on her with two different girls and the pair have since been exchanging bitter words - especially after Lewis branded 32-year-old Lauren a "40-year-old"!
To add salt to the wound, Lewis spoke out last night saying he is "over the moon, man" following the split and that he really fancies TOWIE newbie George Harrison.
No worries, it looks like Lauren has already moved on! Earlier this month, Lauren and Kirk were pictured hanging out, telling fans they were "building bridges".
That they are!
Reveal has contact Lauren and Kirk's reps for a comment.