Amanda Bynes has returned to Twitter after a four-month break.

Amanda Bynes (c) Instagram

Amanda Bynes (c) Instagram

The 'Easy A' star treated her 3.5 million followers to a picture of herself with her make-up artist best pal Troy Jensen earlier today (17.12.15), and she looked delighted to be making her comeback on the social networking site.

She captioned the image: "Me and my bestie @itstroyjensen! Happy Holidays! (sic)"

In the picture, the 29-year-old actress has her hand placed on her BFF's shoulder.

She looks to be having a whale of a time while showing off her long nails and wearing a mesh top, teamed with a black coat.

Troy also appears to be enjoying the selfie as he sports a beaming smile on his face.

Amanda's previous Twitter post came on August 18 and that was also a selfie with a pal.

She posted a picture with designer Michael Costello and was even wearing one of his outfits in the photo.

In the caption, Amanda wrote: "Me and the fabulous Michael Costello (I'm wearing one of his beautiful gowns) at the SOAR Los Angeles Gala!"

It's been a few months of returns for the troubled star as she headed back to fashion school in October to continue her career in design.

Last year, the star was kicked out of Fashion Institute of Design and Merchandising (FIDM) in California.

A source said in October: "She's taking sketch classes to learn how to draw fashion pieces that can later be turned into real garments. She'll have a personal security guard to walk her around campus."