at the game
Sydney Sweeney ditched her fiancé for a special plus-one at the Brooklyn Nets game on Tuesday ... catching all the action courtside with her 11-year-old movie costar.
The 27-year-old actress hit up the Barclays Center to watch the Nets' Battle of the Boroughs with the New York Knicks ... which ultimately ended with Karl-Anthony Towns and Co. coming away with the 99-95 victory.
Sweeney's partner, Jonathan Davino, was nowhere to be seen -- instead, she elected to have fellow "The Housemaid" cast member Indiana Elle join in on the fun.