The 'underboob' bikini trend returns to Australian beaches - but why is it so popular?
By A Mystery Man Writer
![](https://i.dailymail.co.uk/1s/2019/02/08/05/9546026-6681445-image-a-401_1549604982861.jpg)
Last year it was the 'side boob' that was getting all of the attention and this summer Instagram is seeing a resurgence in the 'underboob' from Australian models and celebrities.
![](https://i.dailymail.co.uk/1s/2019/02/08/05/9546040-6681445-image-a-402_1549605080641.jpg)
The 'underboob' bikini trend returns to Australian beaches - but
![](https://i.dailymail.co.uk/1s/2019/02/08/05/9546032-6681445-Gone_are_the_days_where_simple_cleavage_was_considered_risqu_eno-m-383_1549604140464.jpg)
The 'underboob' bikini trend returns to Australian beaches - but
![](https://i.dailymail.co.uk/1s/2019/02/08/05/9546030-6681445-image-a-393_1549604290584.jpg)
The 'underboob' bikini trend returns to Australian beaches - but
![](https://i.dailymail.co.uk/1s/2019/02/08/05/9546024-6681445-Gone_are_the_days_where_simple_cleavage_was_considered_risqu_eno-a-384_1549604145913.jpg)
The 'underboob' bikini trend returns to Australian beaches - but
![](https://i.dailymail.co.uk/1s/2019/02/08/05/9546026-6681445-image-a-401_1549604982861.jpg)
The 'underboob' bikini trend returns to Australian beaches - but
![](https://i.dailymail.co.uk/1s/2019/02/08/06/9546856-0-image-a-406_1549605697093.jpg)
The 'underboob' bikini trend returns to Australian beaches - but