The cute co-stars, who play colleagues/friends/lovers Tony Stark and Pepper Potts, were laughing it up at a photocall in London today.
Robert was seen kissing Gwyneth's ear as the actress covered her face with her hands, hiding a giggle. The two hammed it up for the cameras, holding hands and wrapping their arms around each other.
Gorgeous Gwyneth showed off her gams in an on-trend tuxedo style dress and two-tone heels.
Not to be outdone, Robert (or as we like to call him, RDJ), wore a light blue pinstripe jacket with jeans and accessorized with kicks and a matching tie.
The on-screen couple might just be the best-dressed celebs ever. Gwyneth has been kicking butt lately in a structured floral ensemble and in a comfy jumpsuit while RDJ is on the cover of the May issue of GQ modeling sexy leather jackets.
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