Former Soap Star Alicia Arden -- Wet, Stripping Down ... And Extremely Thirsty

B-actress Alicia Arden is literally betting her ass, that a hot DIY car wash will get Hollywood's attention.

Arden -- who was Theresa Carter on "General Hospital" back in the early 2000s -- is still soaping it up as evidenced by her public strip down to a bikini -- at a West Hollywood car wash.

Check it out ... it's at least the 3rd time Arden's displayed her blatant thirst for camera attention while cleaning her whip. Gotta say though, for a chick turning 46 in two days ... she's still bangin'.