Katy Perry certainly has a lot to Smile about right now.

The pregnant star – who is expecting her first child with fiancé Orlando Bloom – has just unveiled the music video to her catchy new pop song, Smile, ahead of the release of her fifth album.

Katy, 35, appears to be having a lot of fun in the promo video, donning a full clown costume while also playfully (and proudly) showing off her baby bump, as she jests around to the upbeat track.

Embracing her inner children’s entertainer, the quirky video sees Katy goofing about a white backdrop as she cleans a giant set of her own teeth while also propping up her own smile with her hands.

The song is to promote her new album Smile, which is out on August 14th, also around the same time as her expected due date.

‘There’s a lot that will be happening this summer,’ Katy teased recently, ‘not only will I be giving birth – literally – but also figuratively, to something you guys have been waiting for.’

Talking about the single, Katy said last week: ‘Step right up! Step right up! KP5 is called #SMILE’

‘I wrote the title track from the album when I was coming through one of the darkest periods of my life and had lost my smile. This whole album is my journey towards the light – with stories of resilience, hope, and love.’

Katy also admitted she hopes the song ‘Smile’ will give people “hopefulness”, as it did when she was penning the tune.

She added: ‘#SMILE – the song – is out everywhere now! I hope it can be a few minutes of energizing hopefulness for you as it is for meee (sic)’

The new record will include the already-release singles Never Really Over, Harleys in Hawaii, and Daisies.

In May, Katy admitted her 2017 split from Orlando – who she has since reconciled with – left her ‘broken’, and she was hoping to feel excited about her record ‘Witness’, but the album didn’t perform to her expectations.

She said: ‘My career was on this trajectory when it was going up, up and up and then I had the smallest shift, not that huge from an outside perspective. But for me it was seismic.

‘I had given so much out, and it literally broke me in half. I had broken up with my boyfriend, who is now my baby daddy-to-be.

‘And then I was excited about flying high off the next record. But the validation did not make me high, and so I just crashed.

‘Gratitude is probably the thing that saved my life, because if I did not find that I would have wallowed in my own sadness and probably just jumped.

‘But I found the ways to be grateful. If it gets really, really hard I walk around and say, ‘I am grateful, I am grateful,’ even though I am in a s***** mood.’