'7 Rings' Co-Writer Tayla Parx 'Completely Understood' Why Ariana Grande Didn't Attend Grammys

Tayla Parx is the recipient of one of the matching Tiffany’s ringsAriana Grandegifted seven of her friends — and with good reason.Along with helping the pop star pen her hits “7 Rings” and “Thank U, Next,” the singer-songwriter defended Grande’s decision to forego the2019 Grammy Awardsin Los Angeles on Sunday followingan argument she had with producersover her proposed performance, which had already been advertised on billboards promoting the show.“I completely understood about her not coming,” Parx, 25, told PEOPLE on the red carpet ahead of the ceremony.

'70s Teen Idol Shaun Cassidy on Playing Pittsburgh the Same Night as Taylor Swift: 'She's Brilliant' (Exclusive)

Photo:Presley Ann/Getty, Kevin Mazur/TAS23/GettyAs one of the biggest pop stars of the late ’70s, Shaun Cassidy knows about packed arenas, screaming fans and chart-topping singles.And even though he left the spotlight of the music stage decades ago for a successful career writing and producing television hits (most recently NBC’sNew Amsterdam), thenew stage show he’s created and is performingjust happened to hit Pittsburgh on the same night as a certain female pop star.

'7th Heaven' Star Barry Watson Turned Down Roles to Focus on Fatherhood: 'I Have No Regrets'

Photo: the Riker Brothers It’s been 25 years since the first episode of his hit series7th Heaven, but Barry Watson is still getting reminders of the show and his character today. “My [16-year-old] son Oliver grew his hair out and I looked at him the other day and he reminded me of Matt Camden,” says Watson, 47, who played the eldest Camden sibling for six seasons. “My 13-year-old Felix just binge-watched it.

'80s Actor Andrew McCarthy Talks Bonding with Son Sam While Walking 500 Miles Across Spain (Exclusive)

Photo: Allison Michael OrensteinAfter walking the Camino de Santiago across Spain some 25 years ago, Andrew McCarthy — known best for his roles in beloved 80s hits such asSt. Elmo’s FireandPretty in Pink— wanted to pass that experience on to his son, Sam, as he took his first steps into adulthood (both literally and figuratively).“Sammy totally walked into his strength without question, emotionally and physically,” recalls Andrew of the 32-day trip the pair took across the Spanish country.

'80s Icon Brigitte Nielsen Opens Up About Raising 5-Year-Old Daughter: 'I'm a Better Parent at 60!' (Exclusive)

Brigitte Nielsen and daughter Frida.Photo:Monica Gumm Monica Gumm Brigitte Nielsenknows what you’re thinking. At age 60, she’s far toooldto be a mom to a 5-year old. “Half the world was saying that when I got pregnant at 55 — including my four older sons,” says Nielsen, who gave birth to herdaughter Frida, 5,when she was 55. (She’s also mom to four older sons, who range in age from 28-39.) “But first of all, there’s no such thing as ‘too old,' " she tells PEOPLE exclusively in this week’s issue.