Off limits! Nick Jonas and Camilla Belle look amazing well-suited at the Topman magazine launch... but she used to date his brother

They may have looked every inch the coordinating couple, but if they were anything more than friends this singer would be breaking some serious bro codes - literally.

Nick Jonas and Camilla Belle dressed to impress as they celebrated the Topman This Is Tailoring Issue on Thursday.

The two thespians looked as though they had planned their outfits together at the event held at the famed Chateau Marmont in West Hollywood, California.

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Stylish pair: Nick Jonas and Camilla Belle dressed to impress as they celebrated the Topman This Is Tailoring Issue in West Hollywood on Thursday

Stylish pair: Nick Jonas and Camilla Belle dressed to impress as they celebrated the Topman This Is Tailoring Issue in West Hollywood on Thursday

However, before fans to get too excited and scream 'new couple alert', even though these two look great together their union can never be - as Camilla used to date Nick's brother Joe.

While they cannot have a love connection, they certainly had a sartorial one as they posed up together in navy looks beside the hotel's famous pool.

Nick, as the host of the event, look particularly dapper wearing a twist on a classic suit look.

With the issue's focus on tailoring, the 23-year-old donned a navy tailored suit jacket but changing things up, wore it with a navy and white striped tee and bone slim cut trousers.

Coordinating pair: The two thespians looked as though they had planned their outfits together at the event
Coordinating pair: The two thespians looked as though they had planned their outfits together at the event

Coordinating pair: The two thespians looked as though they had planned their outfits together at the event

Host with the most: With the issue's focus on tailoring, Nick (pictured with Nate Berkus) donned a navy tailored suit jacket and bone slim cut trousers

Host with the most: With the issue's focus on tailoring, Nick (pictured with Nate Berkus) donned a navy tailored suit jacket and bone slim cut trousers

That's different: Changing things up, the 23-year-old wore his suit with a navy waffle knit tee with white stripes on the collar and waistband

That's different: Changing things up, the 23-year-old wore his suit with a navy waffle knit tee with white stripes on the collar and waistband

Styled with the jacket sleeves pushed up, the Jealous singer added a pair of navy suede boots, a white pocket square and a big gold watch.

Camilla also wore a navy outfit, namely a high necked dress which on first glance seemed rather conservative.

However, on closer inspection the 29-year-old cheekily flashed some skin through tiny cut out sections incorporated into the purple beaded dandelion clock pattern.

Adeed extras: Styled with the jacket sleeves pushed up, the Jealous singer added a pair of navy suede boots, a white pocket square and a big gold watch

Adeed extras: Styled with the jacket sleeves pushed up, the Jealous singer added a pair of navy suede boots, a white pocket square and a big gold watch

Feeling blue: Camilla also wore a navy outfit, namely a high necked dress which on first glance seemed rather conservative but on closer inspection in featured flesh-flashing cut-outs

Feeling blue: Camilla also wore a navy outfit, namely a high necked dress which on first glance seemed rather conservative but on closer inspection in featured flesh-flashing cut-outs

Theme dressing: Getting the navy memo was former Glee actor Chord Overstreet, who wore his blue jacket with a pair of black jeans

Theme dressing: Getting the navy memo was former Glee actor Chord Overstreet, who wore his blue jacket with a pair of black jeans

Camilla appeared to be the sole representative for the females of Hollywood, with the event all about Tinsel Town's snappy dressed men.

Also rocking a navy suit was Nick's Kingdom co-star Jonathan Tucker.

The 33-year-old actor had a classy hard man look to him in a slim cut jacket and matching pants which he wore with a Mandarin collared shirt.

Babes in blue: Also rocking a navy suit was Nick's Kingdom co-star Jonathan Tucker

Babes in blue: Also rocking a navy suit was Nick's Kingdom co-star Jonathan Tucker

Serving up style: The 33-year-old actor had a classy hard man look to him in a slim cut jacket and matching pants which he wore with a Mandarin collared shirt

Serving up style: The 33-year-old actor had a classy hard man look to him in a slim cut jacket and matching pants which he wore with a Mandarin collared shirt

Double denim: Embracing denim as well was interior design star Nate who was given a run for his sartorial money by his hunky husband Jeremiah Brent

Double denim: Embracing denim as well was interior design star Nate who was given a run for his sartorial money by his hunky husband Jeremiah Brent

Also getting the navy memo was former Glee actor Chord Overstreet, who wore his blue jacket with a pair of black jeans.

Embracing denim as well was interior design star Nate Berkus who was given a run for his sartorial money by his hunky husband Jeremiah Brent.

The couple just celebrated their two year wedding anniversary last week and their baby daughter Poppy turns one on Monday.

Milestones: The loved up pair just celebrated their two year wedding anniversary last week and next week their daughter Poppy turns one

Milestones: The loved up pair just celebrated their two year wedding anniversary last week and next week their daughter Poppy turns one

Ex files: Even though Nick and Camilla look great together their union can never be - as Camilla used to date Nick's brother Joe (pictured 2009)

Ex files: Even though Nick and Camilla look great together their union can never be - as Camilla used to date Nick's brother Joe (pictured 2009)

 

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