Lady Gaga, Rihanna, Keira KnightleyCourtesy Photos (3); Getty Images (2); Fame Flynet

1. Lady Gaga and her pooch wore matching Louis Vuitton x Yayoi Kusama collars. [MTV Style]

2. Oprah’s tour of Barbados with Rihanna will air this Sunday. See a sneak preview! [OWN YouTube]

3. Is Chanel’s Karl Lagerfeld designing Keira Knightley’s wedding dress? [Coco Perez]

4. Twins Tia and Tamera have gotten even closer, thanks to motherhood. [People]

5. Illustrator Danny Roberts painted Tiffany’s new store facade, and it’s pretty. [Fashionista]

6. The Diana Vreeland documentary is finally making its way to the states next month. [Racked]