AceShowbiz - Britney Spears is not letting Kevin Federline's recent comment about her relationship with her kids bother her. The "Oops!...I Did It Again" hitmaker looked happy while dancing without bra after her ex-husband claimed their sons are embarrassed by her.

Making use of her Instagram account on Sunday, August 7, the 40-year-old pop star posted a video of her dancing without music. She put on a busty display in a low-cut mustard yellow dress while going bra-free.

Britney moved back and forth, foot to foot, and twirled in front of the camera while giving a sultry smile. Her long blonde hair fell down to the middle of her chest in a messy chic style and black eyeshadow made her eyes pop, while a tiny silver necklace wrapped around his neck. In a note accompanying the clip, she wrote, "No music ??? Why is silence so loud ??? So loud you could almost cut it !!!"

The video arrived just a day after her former spouse Kevin opened up about the state of his sons' relationship with their mother during an interview for ITV News. "The boys have decided they are not seeing her right now. It's been a few months since they've seen her. They made the decision not to go to her wedding. There were a lot of things going on that I didn't feel comfortable with," Kevin said, "They tried to give her the benefit of the doubt but at the same time, I can tell that sometimes, it hurts to be in that position."

Responding to Kevin's comment, Britney, who shares Sean Preston, 16, and Jayden, 15, with Kevin, issued a statement via Instagram Story, admitting the comments were "hurtful." She wrote, "It saddens me to hear that my ex husband has decided to discuss the relationship between me and my children ... as we all know, raising teenage boys is never easy for anyone ... it concerns me the fact that the reason is based on my Instagram."

"It was LONG before Instagram ... I gave them every thing ... Only one word: HURTFUL ... I'll say it ... My mother told me 'You should GIVE them to their dad' ... I'm sharing this because I can," Britney continued, before concluding, "Have a good day folks!!!"

Also responding to Kevin's remark was Britney's husband Sam Asghari, branding Kevin "irresponsible" and insisting there was "no validity" to his claims. The fitness trainer added, "To clarify my wife has never posted a nude selfie except of her butt which is quite modest these days."

"All other posts were implied nudity which can be seen in any ad for lotion or soap," Sam further defended his wife. "There is no validity to his statement regarding the kids distancing themselves and it is irresponsible to make that statement publicly."