Your girl is absolutely stunning. She is indeed very heavily pied! Well, knowing what her siblings are, there is recessive pied in the family, but she does have irises, so it's dubious if she has recessive pied or not. Was more than one parent dominant pied?
Meanwhile, please be sure to read through the forums' many budgie articles and "stickies" to ensure you're up to date on the best of budgie care practices! If you have any questions after doing so, please be sure to ask as we'd love to help.
Please take the time to read through the Site Guidelines, the FAQs, the Budgie Articles and all of the Stickies located at the top of each section of the forum.
Additionally, please be sure to read the thread "Posting on the Forums" which is linked below.
Truly, the very BEST advice anyone can offer you is to take the time to read ALL of the stickies throughout the various Talk Budgie forums as well as the Budgie Articles we have posted.
(Stickies are threads “stuck” at the top of each forum sub-section)
These are great resources for Talk Budgie members and have a wealth of reliable information which will assist you to learn the best practices in caring for your budgies for their optimal health and well-being.