Britney Spears was spotted out with a huge diamond on her ring finger, fueling speculation that boyfriend and former agent Jason Trawick proposed on their recent trip to Hawaii, according to the Sun.

Spears showed off the new jewelry while taking younger son Jayden out for a burger at a Southern California mall to celebrate his fourth birthday.

Spears has been married twice before, briefly to childhood friend Jason Alexander and for two years to Kevin Federline.