The tiny two-and-a-half-year-old tot sits in her dad’s arms throughout the 32-second promotional vid, smiling and nodding shyly when Joel asks her if people should buy the new single.
And Joel even took to Twitter to tell fans about the new video, adding that little Harlow 'loves' joining him on set.
'Harlow helps announce our song on itunes LOL She's loves goin 2 work w/me,' he wrote.
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SEE Harlow’s screen debut here…
What do you think of Harlow’s screen debut? Let us know your thoughts in the comments box below.