The only thing most people know about Monaco is that it’s a tax haven — a “sunny place for shady people,’’ Rolling Stones guitarist Keith Richards once said — located on the French Riviera. This weekend, it’s also where a handful of the world’s richest people, including apparently Patriots QB Tom Brady, will gather to watch the Monaco Grand Prix, a Formula One race that’s as much about glamour and prestige as it is about speed.

Word is Brady, who uncharacteristcally skipped the Patriots’ optional spring workouts, will be at Sunday’s Monaco Grand Prix as part of a promotion for TAG Heuer, the luxury watchmaker for whom Brady serves as a “brand ambassador.’’

TAG Heuer, whose fancy timepieces range in price from several hundred to several thousand dollars, is a major sponsor of the race. (Its TAG Heuer Monaco watch was featured in the cult classic 1971 racing film “Le Mans,’’ whose star, Steve McQueen, could be seen wearing the flashy ticker.)

The watchmaker also made headlines when it announced it’s bringing back to the Monaco Grand Prix female models — once called “grid girls’’ — over the objections of Formula One official Sean Bratches, who said the practice is no longer appropriate.

Instead of women holding up drivers’ numbers, women and men repping TAG Heuer will take photos with the drivers for use on social media.