Britney Spears has fuelled rumors she is expecting her third child after she was snapped shopping for pregnancy test in Los Angeles. New pictures have emerged showing the singer and her boyfriend photographer Adnan Ghalib browsing pregnancy tests at pharmacy store Rite Aid earlier this week. The shots were allegedly released by Ghalib's photo agency, FinalPixx. Meanwhile, Spears is trying to regain the share custody of her two sons with ex-husband Kevin Federline, who has the sole rights now.