Amber Heard was joined by fiance Johnny Depp (and her giant engagement ring!) as she was honored at the Texas Film Awards on Thursday, Mar. 6. Credit: Gary Miller/FilmMagic (2)

There's that beautiful bling! Amber Heard received an award at the Texas Film Awards in Austin, Tex., on Thursday, Mar. 6, and supporting her on the red carpet was none other than smiling fiance Johnny Depp. Multiple eyewitnesses at the event tell Us Weekly that the two lovebirds were adorable together.

"They were holding hands as they walked in and onto the red-carpet," one insider tells Us. "They seemed very in love."

The 3 Days to Kill actress, 27, looked elegant in an eclectic short-sleeve black mesh Ulyana Sergeenko dress, which she paired with red heels. Most noticeable, however, was the gigantic sparkling diamond on Heard's left ring finger.

Fifty-year-old Depp, on his end, complemented his love's black outfit in an oversize black wool coat, hat, and spectacles. Joining Heard and Depp at the event were her parents, Paige Parsons and David Heard.

Heard, a native of the Texas city, was honored by the Austin Film Society with the Rising Star Award. "I always prefer to shoot the gun than wear a wedding dress," the actress said last month at the film's press conference in Beverly Hills. "It's far more interesting to me." Ryan Kavanaugh, CEO of Relativity Media (which distributed 3 Days to Kill), presented the blonde beauty with the award at the event, where Depp and Heard "took photos and sat together."

The couple later left the event together with Depp's "arm around her" as they walked to their car. "They didn't stay for the after party," an eyewitness tells Us. Once the couple got to their vehicle, the source says Depp "helped [Heard] into the car!" before standing on the rail and waving to fans.

"He seemed very protective over her," the insider adds. "And they were just adorable overall."