Britney at Fox Studios 2 Days in a Row!

She arrived at the set of "How I Met Your Mother" early Tuesday morning and was seen again rolling on through yesterday morning! On the first day, they rehearsed the read through and yesterday she shot the cameo over a 12 hour period! She was seen heading to the gym after working the 12 straight hours too! I'm thinking Brit is finally back on the right track and ready to dominate the world once more. I'm so ready for it! Haha