AceShowbiz -

Halsey is ready to welcome 2018 with a new look. Just a few days before the end of the year, the 23-year-old singer/songwriter debuted her brand new platinum blonde hair, which is now cut short, when stepping out with boyfriend G-Eazy in Beverly Hills on Thursday, December 28.

But there's something else that caught people's attention from her look that day. The "Bad at Love" hitmaker went braless under a pink shirt that she knotted just below the chest, leaving little to the imagination. She also flaunted her taut tummy and her collection of tattoos on her arms.

The duo had a lunch date at Il Pastaio that afternoon. She completed her casual look with gray sweatpants, which gave a peek at her nude briefs, and tan Timberland boots. She accessorized with some necklaces, silver hoop earrings and sunglasses.

Her rapper beau, meanwhile, opted for a black Harley Davidson T-shirt, light blue jeans and gray sneakers. He also sported a black cap and black sunglasses. They were walking hand-in-hand as they were strolling the street together.

Halsey and G-Eazy first sparked dating rumors in August when the former attended an event for the 28-year-old rapper. Later that month, they shared a smooch during a performance of their duet "Him & I" off G-Eazy's new album "The Beautiful & Damned" at "Bud Light's Dive Bar Tour".

"Backstage, they were holding each other and occasionally kissing before and after their performance. They played up being in a relationship on the night. They really had eyes for each other and it looks like something is brewing," a source told HollywoodLife.com how their relationship started when they worked together.

"Things are happening pretty fast and it's exciting but a bit scary as well because it feels so right," the source added. "They both are looking forward to seeing where things go but so far so good. They just don't want to ruin a potential good thing by rushing into it because they still would love to work together if the relationship part of things falls through since they really enjoy each other's music. It's clearly a honeymoon phase situation and they are enjoying the ride."