Farah, 51, took to Twitter to share the news.
"Directing the music video for guess which boy band?? The answer lies on the wall behind me..Correct replies will get a prize," she tweeted.
In the next tweet Farah shared a picture of hers along with band members Bradley Simpson, James McVey, Connor Ball and Tristan Evans.
"Yes! It is @TheVampsband ... #Nakhra... All those, who answered correctly get to watch the video," she wrote in caption.
The band's breakthrough came with their debut single "Can We Dance", which received over one million views within two weeks of its release.