`simple_form` Date Selector

I've been working with the simple_form gem to create the forms in my app and I would like to know if anyone have experience replacing the default date selector? Its functional but a completely unacceptable alternative to a typical calendar date picker, simple_form uses three select lists, one per day/month/year respectively 😵.

The form tag its like: <%= form.input :birth_date %> so no real option to customize the output there...

Any help in using better a date selector for this gem is highly appreciated.