The Weekend Tip: Rihanna Scheduled to Perform at Barclays Center

1. Mark your calendars, Rihanna fans. The Barbadian singer will make her first Brooklyn appearance at Barclays Center as part of her World Diamond Tour next May. Rihanna joins an avalanche of big-names set to appear at the arena, including Jay-Z, Barbra Streisand and a reunited Rolling Stones. Tickets for Rihanna's May 4 appearance will go on sale Sept. 21 at noon through Ticketmaster or by visiting barclayscenter.com or calling 800-745-3000.

2. The 5th Annual Lexington , which was canceled last month due to the threat of rain, again brings the promise of food, fun and music—plus a perfect chance to mingle with your neighborhoods. Note: We're not sure yet if Saturday's inclement weather is going to put a damper on things. Stay tuned. Classon and Lexington avenues. Sat., noon to 8 p.m. Free.

3. It's time for artists: Community members registered as voters will visit studios and nominate artists for inclusion in a group exhibition as part of GO Open Studio Weekend. For a list of locations by neighborhood, click here. Sat. and Sun., 11 a.m. to 7 p.m. Free.

4. Pickles, baked goods and farm fresh vegetables are for sale by local bakers, artisans and farmers at Clinton Hill's very own . Trilok Fusion Center, 143 Waverly Ave. Sun., 9 a.m.

5. is hosting three free yoga classes at Downtown Brooklyn's favorite pop-up retail venue. Dekalb Market, Willoughby Street and Flatbush Avenue Ext. Sun., 11 a.m., 1 p.m. and 3 p.m. Free.