New York, Feb 5 : American actress Jessica Alba recently displayed her pink bow "tramp stamp".

As per the UrbanDictionary. com a "tramp stamp" is a tattoo above a woman''s a-crack, and Alba's could be seen perched directly over it, reports the New York Daily News.

Women who have a "tramp stamp" are said to be promiscuous, though it is not a proven fact.

Meanwhile, Alba organised a surprise party for her hubby Cash Warren's 30th birthday.

The party is said to have been so grand that Warren burst into tears. (ANI)