Getting the teeth inside would require either braces( orthodontic treatment ) or cosmetic procedures like veneers etc. considering your age, braces would be ideally suited as it will offer a more permanent solution. Laminated and veneers are quicker but slightly invasive procedures as your natural teeth will be cut. They will also require replacement after a few years.
Next Steps
Consult a dentist and take an informed decision after understanding your options clearly.