Britney Spears, who is enjoying promoting her forthcoming album 'Femme Fatale', has released yet another clip of a track that will feature on the new record. 

This new snippet is from a song called 'Seal It With A Kiss' and is in keeping with what we've heard from the rest of the track listing, and she also drops in another famous saying, namely "cross my heart and hope to die".

Just before she revealed the clip, Britney posted a message to fans on Twitter that said:

"I HEART Mario Testino and V Magazine. Comes out tmw..."

Spears attached a picture to the tweet that was shot by high-fashion photographer Mario Testino for V Magazine, and it will feature in the issue that is out tomorrow on March 3. Listen to part of 'Seal It With A Kiss' below: