Lester Cohen / WireImage 1 / 8
Lester Cohen / WireImage 1 / 8

Engaged and underage? Not quite.

Miley Cyrus, 19, and Liam Hemsworth, 22, announced their engagement Wednesday, and since then have received nothing but support from their family and fans.

PHOTOS: Stars who wed too young

"All I ever hoped for as a Daddy was to see my kids reach their dreams," Cyrus' father, Billy Ray Cyrus, 50, tweeted. "To find happiness...peace of mind ...and someday know... true love."

Her mother, Tish Cyrus, also tweeted Thursday, "Wow! All of the love pouring out for Miley and Liam is incredible! So happy for my precious baby girl and the love of her life!"

PHOTOS: Best celebrity engagement rings

And an insider close to the "Can't Be Tamed" singer tells Us Weekly she's ready to wed Hemsworth, despite her young age. "She's very mature! She's 19 going on 40, so she is ready for [marriage]," the insider explains. "Liam likes her wild side, but Miley's also mature and supportive. They're both ready for this."

Cyrus and Hemsworth first met on the set of the 2009 Nicholas Sparks film "The Last Song." They briefly split in August 2010, but have been together since.

PHOTOS: Miley's wild life so far

And while their families support their decision to get engaged young -- so do "Miam" fans.

"The pic that first sparked rumors that Miam were dating.." Team Miley NY tweeted with an image of Cyrus and Hemsworth nearly kissing at the Nashville International Airport on Aug. 19, 2009.

Cyrus tweeted back with a smiley face, "Who would've thought that would be my fiancé." She added, "Every one has been so positive. All this energy is amazing."


Miley Cyrus and Liam Hemsworth Are Engaged!

Pop Culture's Best Alter Egos

Mom and Daughter BFFs