Photo courtesy of Twitter

Amanda Bynes had a tumultuous 2013, so we're happy to see the Nickelodeon star seems to be doing much better after tweeting a few vacation photos from Cabo San Lucas in Mexico.

Amanda was all smiles in a number of photos in which she's wearing a yellow bikini and large sunglasses. 

Spring break pic.twitter.com/YyP4UDTf3T

— amanda bynes (@amandabynes) April 6, 2014

Thank you everyone for all the birthday wishes. pic.twitter.com/wePNZbTEAW

— amanda bynes (@amandabynes) April 6, 2014

Amanda celebrated her birthday on April 3.

The 28-year-old actress is reportedly on a supervised spring break with her parents, Lynn and Rick Bynes. She's currently enrolled at the Fashion Institute of Design and Merchandise in California after spending several months in treatment for mental illness. 

Amanda was diagnosed with bipolar disorder and schizophrenia last October.

Since her release to her parents in December 2013, Amanda has kept a low profile in the public eye and has been studying fashion design. 

For the first half of 2013, Amanda's increasingly erratic behavior in New York City caused great concern among her fans. She was finally put on psychiatric hold after setting someone's driveway on fire in July. 

We're glad to see Amanda happy and healthy!