United Kingdom, July 3 -- Britney Spears was "so nervous" ahead of her sons' runway debut.

The Toxic singer wasn't in attendance to see Preston, 20, and 19-year-old Jayden - who she has with ex-husband Kevin Federline - walk in the Vetements menswear Spring/Summer 2027 show at Paris Men's Fashion Week last week, but she made sure they knew she was thinking of them and they had her full support.

Speaking to America's Vogue magazine, Jayden said when asked Britney's opinion: "Oh my god, she was so nervous for us. She was just looking out for us and making sure that this was what we wanted to do.

"She wasn't there with us, but she sent us flowers to our hotel as a good luck thing, and called and texted us so many times. It was good to hav...