Britney Spears saw her sons for the third time since the weekend yesterday.

The troubled singer spent three hours with two-year-old Sean Preston and 17-month-old Jayden James - who both sported new short haircuts - after reaching a visitation agreement with ex-husband Kevin Federline.

A source close to the 'Toxic' star said: "Britney has been very affectionate with the boys, giving them lots of hugs and kisses. Kids this age are amazingly resilient, and the very close bond that Britney has with her children is apparent."

She was first reunited with the boys on February 23, after her lawyers agreed on a visitation schedule with Kevin's lawyers. During the visits, Britney always has to be accompanied by her father, and co-conservator of her estate, Jamie, a psychiatrist, a lawyer and one of Kevin's security guards.

Meanwhile, Britney is currently rehearsing for her new video for single 'Hot as Ice'.

An insider said: "Britney is ready to take the next step to shooting the video. She's been working a chair routine out in the studio and is ready to animate it."

The 26-year-old 'Gimme More' singer is said to be "very clear" and focused, and will rehearse four times a week to ensure she is ready for the shoot.

The insider added: "Now that a lot of the drama is behind her, she's really getting serious about making a comeback. She knows that once she gets working out more in the studio, her excess weight will start coming off - they always do."

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