Spending the weekend in Sin City, Whitney Port looked to be having the time of her life at Jet Nightclub inside the Mirage Hotel & Casino on Friday night (October 1).

There for the Rolling Stone Hot Party, the MTV reality cutie showed off a brand new yellowish hairdo as she offered up plenty of PDA while smooching and cuddling with her boyfriend Ben Nemtin.

In between spending time with her man, Whitney was also able to squeeze in a little fun with the ladies – as she joked around with fellow guest Sammi ‘Sweetheart’ Giancola of “Jersey Shore” stardom while blowing out candles on a specially crafted Hot Party cake.