Take that Justin! Selena Gomez flashes serious cleavage in plunging mini-dress at Rudderless premiere... after splitting with Bieber

PUBLISHED: 04:56, 8 October 2014 | UPDATED: 09:37, 8 October 2014

She is believed to have split from on-off flame Justin Bieber after unfollowing him on Instagram.

But on Tuesday night Selena Gomez no doubt had the Baby singer on her mind as she wore a plunging mini-dress to the Los Angeles premiere of Rudderless.

The 22-year-old was absolutely gorgeous in the revealing garment as she stepped onto the red carpet looking every inch the glamorous movie star.

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Sending a message? Selena Gomez donned a plunging mini-dress to the Los Angeles premiere of Rudderless on Tuesday, following her reported split from Justin Bieber

With elegant drop earrings framing her face, the singer and actress wore her hair in a neat part and tight bun.

Standing tall in black heels, Selena appeared to be in a lighthearted mood as she posed for snaps.

Meanwhile, she has appeared in only a handful of films in the past few years including, most significantly, crime drama Spring Breakers alongside James Franco and action thriller Getaway with Ethan Hawke.

Putting in the leg work: Selena showed off her slim pins on the red carpet

Take that! The 22-year-old stopped following her on-off beau on social media

Pretty as a picture: Selena revealed a cheeky hint of her back tattoo as she turned around to work her magic in front of the camera

But now Selena is showing off her dramatic chops in William H. Macy's directorial début Rudderless.

Selena plays Kate, the ex-girlfriend of student Josh Manning who is tragically killed in what appears to be a mass shooting.

'It’s a film of redemption,' Macy told CraveOnline earlier this year. ''Billy Crudup is so winning, you really want him to succeed.'

Lady in red: The Come & Get It singer looked gorgeous in her shiny garment

Laughing out loud: Selena looked to be in a lighthearted mood

The movie, which was shown at the Sundance Film Festival back in January, also co-stars Jamie Chung and Laurence Fishburne with Macy himself appearing in the small role of the bar's owner.

Ruderless is released in US cinemas on October 17.

But there are other things brewing for Selena at the moment.

The pop star has unfollowed her on-off boyfriend on Instagram just days after he was spotted enjoying a boozy lunch date with her model pal Kendall Jenner while the trio attended Paris Fashion Week.

Co-star love: Selena posed with William H Macy and Felicity Huffman

Trailer: Rudderless starring Billy Crudup, Selena Gomez

Mr Popular: Selena and Felicity seemed to be having a cute play-fight over William as they posed together on the red carpet

Selena also posted some cryptic tweets, claiming she didn't feel 'good enough' and was turning to god.

She wrote on the social media site: 'Sometimes we think we aren't good enough. But then I realize when I think I'm alone I have God.'

'We have to learn the hard way sometimes.'

Flirty: The star looked to have Justin far from her mind

Although it isn't known whether her tweets are directly related to Justin's date with Kendall, Selena - who flew back to the US alone - previously had a bust-up with Kendall and her younger sister Kylie Jenner, 17, after they attended the Coachella Valley Music Festival together.

It was reported that the Spring Breakers star discovered when she found text messages from Kylie on Justin's phone.

However, Selena supposedly ended her feud with the Keeping Up with the Kardashians stars in April after realising she 'overreacted.'

A source said at the time: 'Selena has no issues with the Jenner girls. They had an issue but they have cleared it up. She has always liked the Jenner girls. They had been fans of Selena since they were young.'