Such was the delight at the prospect of a trip to Wembley next months, several fans jumped the gun and ran onto the pitch before the final whistle.
The majority of the crowd in attendance at Villa Park condemned the actions, perhaps fearing that it could put the 2-0 victory at risk if the game had to be halted or abandoned.
But the stewards succeeded in clearing the pitch long enough for the game to be completed.
And thousands more took the pitch to express their satisfaction when the final whistle did eventually blow.
West Brom's Callum McManaman looked particularly perturbed by the invasion as the visitors fled for the dressing room.
But Villa seemed to celebrate the spontaneous outpouring of joy, posting a Vine on their official Twitter account with the words 'Que Sera Sera' in an allusion to their upcoming trip to Wembley.
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