Ashlee Simpson opened up to Us Weekly about her second pregnancy while supporting her husband Evan Ross at his Just Before I Go premiere on Monday, April 20 Credit: Jon Kopaloff/FilmMagic

Ashlee Simpson and Evan Ross are so in L.O.V.E. The singer-actress opened up to Us Weekly about her second pregnancy while supporting her beau at the premiere of his new film, Just Before I Go, in Hollywood on Monday, April 20.

"I'm feeling good, I'm feeling great. I've been active, which has been really nice," Simpson, 30, told Us. "I've been doing Tracy Anderson."

But when Simpson isn't sweating it out to the celebrity trainer's workouts, she's catching some sun. Last month, the star showed off her bare baby bump while vacationing in Los Cabos, Mexico with 26-year-old Ross.

"She has to be the best pregnant mom in the world. Everybody talks about how hard it is but she is so easy and enjoys it and smiles all the time," Ross said of Simpson's 6-year-old son Bronx, whom she shares with ex-husband Pete Wentz. She chimed in: "Yeah, I'm really enjoying it!"

Us confirmed in December that Simpson and Ross are expecting their first child together. Their baby girl will soon have plenty of playmates, including Jessica Simpson's daughter Maxwell, 2, and 21-month-old boy Ace. Ross' famous family, including mom Diana Ross and sister Tracee Ellis Ross, will also be meeting the little one soon.