Both shed a few tears as they said their goodbyes - Alex calling it an "an incredible time", and Holly thanking the British public for their support before adding, "I'm just proud that we've been part of the most successful Strictly."
The semi-final weekend saw each couple dance twice and, as you might expect, there were high scores galore.
Both Holly, who danced the Argentine Tango and the Charleston, and Alex, dancing the Waltz and the Salsa, impressed - Bruno described Holly's Tango as "beautiful, bad and dangerous", while Alex got a "Hip Hip Hooray" from Len for her Salsa - but there was tough competition from their rivals.
Chelsee Healey, who continues to improve, was left "speechless" after scoring maximum points (the first of the series) for her Paso Doble, having earlier scored 36 for the American Smooth.
And Jason Donovan, whose "daddy dancing" Samba didn't go down well with Craig, also got full marks for an "incredible" Tango.
Topping the leaderboard though was Harry Judd. The McFly star kicked off Saturday night's show, scoring 39 for the Charleston, and repeated the feat with his classy and elegant Viennese Waltz.
Now the pressure is really on as Jason, Chelsee and Harry head to Blackpool for the glittering finale.