Britney Spears felt the love from fans this afternoon as she made her way into the Kiss FM studios in London. She's off in England prepping to film the new video for her "Criminal" single and gear up for a tour around Europe and Russia. There's also press to do for her upcoming B in the Mix: The Remixes Vol. 2, which is out next month. Britney was just home in LA for a bit last week, and her boyfriend, Jason Trawick, prompted engagement rumors when he was seen shopping for a ring at Hollywood's Pascal Mouawad jewelers. Her reps denied that Brit and Jason planned to wed, but she was nonetheless rocking a big ring today. The other men in Britney's life, her sons, Sean and Jayden, have just reached special milestones — both Jayden James and Sean Preston had birthdays this week!