A Fairly Odd Movie: Grow Up, Timmy Turner! is the DVD release of the live-action Fairly OddParents movie, A Fairly Odd Movie: Grow Up, Timmy Turner! The DVD was released on July 9, 2011, and the Blu-ray release was on December 4, 2015.  Both have been manufactured through Amazon.com's CreateSpace system.
This is the official summary from the back of the DVD:
It's Timmy Turner, LIVE!, in the first-ever live-action Fairly OddParents movie, A Fairly Odd Movie: Grow Up, Timmy Turner!
Timmy Turner has never had any reason to grow up, because growing up would mean saying goodbye to his fairy godparents, Wanda and Cosmo, forever! Now 23, Timmy is doing everything he can to remain a kid - he still lives at home, is still in 5th grade, and most importantly, has never fallen in love!
But when the formerly geeky and annoying Tootie returns to Dimmsdale as a stunningly beautiful woman, Timmy might be falling in love, which would mean he's finally growing up! Meanwhile, evil billionaire oil tycoon, Hugh J. Magnate, plans on tearing down part of downtown Dimmsdale.
Will Timmy give into his grown-up feelings and lose Wanda and Cosmo forever to help Tootie save Dimmsdale? Will he try to remain a kid forever? Will he ever get a different colored hat? Find the answers to these questions and more, in A Fairly Odd Movie: Grow Up, Timmy Turner!