Christina thinks Britney looks like shit

According to UK Female First, "Christina Aguilera has slammed her pop rival Britney Spears - claiming the pregnant star has "let herself go."

The 'Dirrty' singer, 24, says Britney has not tried hard enough to maintain her sexy image and her future singing career is doomed.

Christina sniped: "I can't see a comeback on the cards".

Earlier this year, Christina proved her long-standing rift with Britney had not healed after she refused to invite the 23-year-old to her forthcoming wedding.

The singer, who is planning a romantic winter wedding, reportedly delivered the ultimate snub by leaving Britney off the guest list.

But Christina, who announced her engagement to fiancé Jordan Bratman in February, claimed the only reason she didn't invite Britney was because she wasn't there when the star tied the knot with dancer Kevin Federline last year.

She explained: "There's no way she's getting an invite to my wedding She snubbed me so I'm going to snub her too".