Nicole Richie rocked a bikini  in Cabo San Lucas on Friday. She was in a strapless black two-piece to lounge by her hotel pool with a similarly swimsuit-clad Samantha Ronson. The girls also showed some skin Saturday during a jaunt to the beach. They're south of the border, hanging out with other pals like Jessica Simpson  and Ashlee Simpson . Any rumors that Nicole and her Fashion Star cohost Jessica are feuding were put to rest when the girls met up for lunch yesterday. The fun vacation comes just days after Nicole Richie turned 30 . We celebrated by looking back at some of her sweetest moments with pals, and it seems those real-life BFFs whisked her away for a couple days of fun in the sun. On the actual day, last Wednesday, Jessica tweeted to Nicole, "Happy birthday Nicole Richie ! Today don't feel guilty about mixing your pressed green juice with vodka. Huge hug and boobie bump!"
Nicole Richie  hung out poolside with her friends in Cabo.
Nicole Richie  took pictures from her pool in Cabo.
Nicole Richie  made a photo op out of a pool in Cabo.
Nicole Richie  and Samantha Ronson shared some bikini time in Cabo.
Nicole Richie  and Samantha Ronson had a girls' weekend in Cabo with their friends.
Samantha Ronson hit the beach in her bikini.
Samantha Ronson wore a bikini in Cabo.
Nicole Richie  wore round sunglasses in the ocean.
Nicole Richie  swam in the ocean in Mexico.
Nicole Richie  played in the Pacific Ocean in her bikini.
Nicole Richie  laughed in a bikini on vacation
Nicole Richie  showed off her back tattoo.
Nicole Richie  showed off her tattoo in a bikini.
Nicole Richie  put on a towel.
Nicole Richie  warmed up in a towel.
Nicole Richie  dried off after swimming in the ocean.
Nicole Richie  wore a bandeau bikini.
Nicole Richie  walked on the sand in Cabo.
Nicole Richie  in a black bikini.
Nicole Richie  had a cocktail in a bikini with Samantha Ronson.
Nicole Richie  finished swimming in the ocean.
Nicole Richie  and Samantha Ronson jumped into a pool in Cabo.
Samantha Ronson lounged by the ocean in a bikini in Cabo.
Nicole Richie  smiled on her way into a pool in Cabo.
Samantha Ronson got a suntan in Cabo.