Lady Gaga is happy to “embrace the challenge” of being a 38-year-old pop star. The chart-topping singer has already enjoyed a huge amount of success in the music industry, but Gaga acknowledged that she’s now entering a new phase of her career. The New York-born star told Buzzfeed Canada: “I’m 38 years old, and it’s kind of fun to embrace the challenge of being a 38-year-old pop star and figuring out who I want to be now and what I want to say because I really love women. “I really want to be a voice that deserves to be part of our community.” Gaga also revealed that she’s excited to “have a f…