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Miley Cyrus is on a great track," '80s singer Tiffany, now 38, told Us Magazine at Comic-Con in San Diego on Saturday. "I know that there are a lot of people that say well when you are so young you shouldn't be sexy.

"I think that in today's world you kind of have to be [sexy] -- to be competitive in the market. I think that she is doing it appropriately. And it's always a fine line there."

Tiffany appeared at Comic-Con with '80s rival Debbie Gibson. The two star together in an upcoming campy sci-flick called Mega Python vs. Gatoroid, which plays to their music rivalry. Gibson commented on Miley as well, but had a different take. She complimented Miley's vocal abilities, but said her new image is "a little too much too soon."

It looked like Lindsay Lohan might be getting out of jail this week, but the LA County Sheriff's office just confirmed that she'll stay put though the weekend, at least. We're sure she's not too happy about the news, but, hey, her original sentence was 90 days! Two weeks is nothing, right?

The 24-year-old actress - who has served a week of her sentence for violating the terms of her probation for a 2007 driving under the influence (DUI) charge - had hoped to be released this week due to prison overcrowding, but a jail spokesman has confirmed that will not happen.

Los Angeles County Sheriff's Department representative Steve Whitmore said: "She won't be released this week."

Her sentence has already been reduced to 88 days because of time she has previously spent in custody, but overcrowding at the Century Regional Correctional Facility in Lynwood, California, means she could still be released as early as August 1.

Meanwhile, Lindsay received a second visit from her mother Dina and sister Ali yesterday. The pair were not allowed to see the Mean Girls actress at the weekend as they had used up their visiting rights on her first day in prison last Wednesday, and so took the first opportunity they could to see her. A prison source said: "Lindsay might get visitors after the official visiting hours are over for the other inmates for security reasons. It's for the safety of everyone."

Lindsay's estranged father Michael has also reached out to some Hollywood stars to ask them to help his daughter "get her life back" after she completes her sentence and subsequent mandatory rehab period. He told Nashville radio station 107.5 The River: