Katharine McPhee enjoys night out with David Foster

Their blossoming friendship is going from strength to strength since they were first spotted together in April.

And Katharine McPhee, 33,  and close pal David Foster, 68, were spotted enjoying another night out together in West on Monday.

The Scorpion actress  revealed a hint of her bra and pert cleavage in a semi-sheer black top while flaunting her toned legs in skintight leather trousers.

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Dinner date: Katharine McPhee, 33, and close pal David Foster, 68, were spotted enjoying another night out together in West Hollywood on Monday

Dinner date: Katharine McPhee, 33, and close pal David Foster, 68, were spotted enjoying another night out together in West on Monday

Separate exit: Leaving the restaurant just behind his friend, music producer David opted for a smart casual look for his dinner date, clad in a fitted slate grey shirt paired with a black blazer and skinny jeans

Separate exit: Leaving the restaurant just behind his friend, music producer David opted for a smart casual look for his dinner date, clad in a fitted slate grey shirt paired with a black blazer and skinny jeans

Wrapping up against the autumn chill, the former American Idol contestant slung on a chic black coat and added height with tan ankle boots.

She toted a chic ivory quilted bag.

Her caramel flecked brunette tresses were styled in loose waves and parted in the middle while her pretty features were enhanced with a light dusting of make-up.

Leaving the restaurant just behind his friend, music producer David opted for a smart casual look for his dinner date, clad in a fitted slate grey shirt paired with a black blazer and skinny jeans.

Stylish: Their blossoming friendship is going from strength to strength since they were first spotted together in April

Back in black: The Scorpion actress revealed a hint of her bra and pert cleavage in a semi-sheer black top while flaunting her toned legs in skintight leather trousers

Back in black: The Scorpion actress revealed a hint of her bra and pert cleavage in a semi-sheer black top while flaunting her toned legs in skintight leather trousers

His silver locks were styled in a trendy quiff and he sported a light tan.

It was the second night out together in a row for the pair who were seen attending a basketball game between the Los Angeles Lakers and the Memphis Grizzlies at Staples Center on Sunday.

Despite rumours of romance, with Katharine seen grabbing David's derriere last month, the pair have denied they are in a relationship and say they are just friends.    

They first met in 2006 when he mentored her during doomed bid to win American Idol. 

They maintained a close bond, returning to perform together on the show two years later.  

David then raised eyebrows in September when he walked

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