Published Tuesday, 17 December 2013
Thicke performed his hit single Blurred Lines on the talent contest in October, and his routine with a group of scantily-clad female dancers led to more than 122 viewers lodging objections with independent regulator.
However, Ofcom bosses have now decided against launching a full investigation after ruling Thicke's performance did not break broadcasting regulations.
A spokesman for the organisation says: "We assessed the complaints and concluded there were no grounds to investigate."
Lady Gaga was also this week cleared of breaking decency rules over her performance on the same show a week after Thicke.
The singer's dance routine in flesh-coloured underwear and a bra fashioned out of a pair of seashells prompted 317 complaints from viewers.