The former Pussycat Dolls star, who briefly split from the Brit last year (12), held hands and flirted with her man after arriving in Malaysia on Friday (22Mar13).
The couple appears to be closer than ever - before his girlfriend's arrival, Hamilton tweeted, "Am now working with my engineers, been an Ok day. Hoping tomorrow will be better. Loved driving the car today, feels great... Been a great day, can't wait to get in the car tomorrow. & my girl @NicoleScherzy arrives to come support me this weekend, can't wait."
Hamilton finished fifth in last weekend's (17Mar13) Australian Grand Prix and is hoping to finish among the top three on Sunday (24Mar13).