Dressed down for a leisurely day Down Under, Katy Perry and friends went shopping on Crown Street in Surry Hills, Sydney on Sunday (October 27).

The "Roar" singer wore her hair pulled back in a grown sweater, red floral top, and black jeans with her black Chucks as the group headed to a local pub afterwards.

On Friday, the peppy pop star celebrated her 29th birthday, tweeting, "Wow. What an incredible day full of 3am starts, different cities, birthday cakes, good friends & drifting in & out of sleep! Thank u for... An incredible birthday & all ur birthday messages. I saw so MANY of them & my ❤ was filled with so much ❤ I have the best friends & fans!"

Sharing a collage of the gals together on Instagram, Rihanna sent her best wishes, writing, "Happy Birthday to my lover and friend !! I miss you so much!! I love the phuck outta you!! I hope I could squeeze on you soon!! #KatyAnna @katyperry."