Selena Gomez dons bikini in Sydney during post-kidney transplant holiday

Selena Gomez is looking refreshed and healthy during her current Australian holiday, and amid her reported split from Justin Bieber.

On Monday, the 25-year-old singer donned an orange bikini top and black bottoms as she enjoyed the sunshine with friends during a boating trip around Sydney Harbour.

In one shot, Gomez was photographed sunning herself while enjoying a good read.

Adding a white tank top for some sun protection, she also took a dip in the cooling waters in another snap.

It's the first time the 'Good for You' singer has been photographed in a bikini since undergoing a kidney transplant last year to treat complications related to lupus, which she later revealed left a deep scar on her abdomen.

But the pop star seemed comfortable and at ease during her afternoon outing.

She is said to be attending Hillsong Church's Colour Conference in Sydney, a religious event Bieber has attended in the past. But two weeks ago, the on-again-off-again couple was reported to have taken "a break."

"They weren’t getting along and decided to take a break," a source told People previously.  "It doesn’t seem like a big deal and they will probably be fine soon again."

Shortly before the reported split, Gomez wished Bieber a happy 24th birthday on March 1 with a sweet Instagram snap shared with her 134 million followers.

"March 1, 1994 someone I know that happens to be super cool was born. Boom," she captioned the pic of herself smiling, a photo of Bieber playfully pasted to her forehead.