AceShowbiz - Cara Delevingne and Ashley Benson have reportedly sealed their romance with a kiss.

Just days after eyewitnesses spotted the couple celebrating the British model and actress' 26th birthday party at Sofitel LA Riviera 31's Salsa Nights in Los Angeles last week (August 08), Cara and the "Pretty Little Liars" star were snapped smooching at Heathrow Airport in London.

In photos obtained by the Daily Mail, a smiling Ashley can clearly be seen wearing a 'C' pendant on a chain around her neck as she and Cara look adoringly at each other.

#caradelevingne ##ashleybenson

A post shared by leokmXII (@leokidmonkey) on Aug 14, 2018 at 9:15am PDT

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The stars were first linked romantically back in April, when the "Her Smell" co-stars were spotted holding hands during a night out in New York.

Weeks later Benson shared a snap of herself with Cara on Instagram, and the lovebirds were reportedly making out at a taping of "Saturday Night Live" a week later.

Delevingne was last linked to Paris Jackson earlier this year, while Benson has reportedly been dating Ryan Good on and off since 2011.

Cara has also reportedly romanced singer/songwriter St. Vincent and actress Michelle Rodriguez.