Photos of Canada's former prime minister Justin Trudeau and his pop star girlfriend Katy Perry at Coachella - the music and arts festival in the California desert - are making the rounds online, thanks to the once-politician ditching his usual statesmanlike attire for jeans and a backwards hat. The internet was quick to react to a series of images and videos shared by the California Gurls singer, which included a clip of the pair enjoying Justin Bieber's headlining performance, alongside the caption "heat checkin' these chickens," a reference to a lyric from the Stratford, Ont.