Taylor Swift's sweet speech & all the iHeart Radio looks

The music world's latest power couple made quite the impact at last night's iHeart Radio Awards.

Taylor Swift and Calvin Harris both made appearances at the awards show in Los Angeles last night, taking home the awards that we're sure they weren't given solely for turning up, and it would have made for a staid affair had Taylor not plucked at the heartstrings of fans and romantics by thanking Harris in her acceptance speech for 'Best Tour'.

"For the first time I had the most amazing person to come home to when the crowds were all gone and the spotlight went out so I’d like to thank my boyfriend Adam for that," she told the audience, referring to Harris by his actual name, Adam Richard Wiles.

Swift also picked up awards for 'Female Artist', 'Album' and 'Most Meme-able Moment' while Harris won the award for 'Dance Artist'.

You can watch Taylor's acceptance speech and see the red carpet photos below.