Kyle Richards Paris Hilton Cy Waits Brooke Mueller Kathy Hilton Rick Hilton birthday the grove Nicky Hilton

Paris Hilton certainly knows how to throw a birthday party! The stunning heiress, and the entire Hilton family, gathered at Frida Restaurant in Glendale for her aunt Kyle Richards' birthday.

Wearing an adorable black shirt with a sketch of her little Chihuahua, Paris and Kyle strike a fierce pose ... and look more like sisters!

We love seeing Paris so in love with Cy! Look at that spring in her step. Also joining the birthday festivities, BFF Brooke Mueller who will star with Paris in an upcoming reality show for Oxygen.

Kyle Richards Paris Hilton Cy Waits Brooke Mueller Kathy Hilton Rick Hilton birthday the grove Nicky Hilton Kyle Richards Paris Hilton Cy Waits Brooke Mueller Kathy Hilton Rick Hilton birthday the grove Nicky Hilton

A gorgeous group, indeed!