Insider says, "Selena added in colored Great Lengths extensions in fun bright colors."

Selena Gomez has a new hair do.

The new hairstyle of Justin Bieber's girlfriend adds new purple and blue hair extensions to her already gorgeous brunette locks.

"Change is good...My girls @ninezeroone take care of me always :) LOVE," Gomez tweeted.

According to Us Weekly, the Disney starlet stopped by the Nine Zero One salon in West Hollywood on Wednesday to get the colorful extensions.

"Selena added in colored Great Lengths extensions in fun bright colors, because she wanted to add some fun highlights for her upcoming tour," an insider told the magazine.

Check out the photos above.