Steven Tyler to Guest Star on Nashville

Things on the set of Nashville have gotten a little “Crazy.”

Steven Tyler will guest star on the ABC drama’s upcoming fourth season, PEOPLE has confirmed.

Tyler posted a sneak peek via Twitter of his upcoming appearance, alongside Hayden Panettiere.

Helen Mirren Pulls Off the Most Graceful Red-Carpet Fall of All Time - Though These 4 Moments Aren't Too Bad Either

See Hayden Panettiere and Newborn Daughter's Silly Snapshot

Three Celeb-Tested, Party-Approved Hair Accessories to Try Now

Meet Hayden Panettiere's Daughter Kaya Evdokia

The Nashville star and fiancé Wladimir Klitschko introduce their 2-week-old daughter

Kourtney and Hayden Give Birth, Taylor Turns 25 & More Weekend News

Hollywood had baby fever this weekend as one star welcomed a daughter, one celeb had a son and another may have had twins. America fell in love all over again with the royal toddler, and everyone’s favorite singer turned 25 in “Style.” Here’s the news you might have missed:

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Hayden Panettiere Welcomes Daughter Kaya Evdokia

The Nashville star is a new mom after welcoming her first child with fiancé Wladimir Klitschko on Tuesday, Dec. 9, her rep confirms to PEOPLE exclusively.

Jennifer Aniston Bares Her Butt, Hayden Panettiere Helps a Gorilla & More Weekend News

It’s their party, and they’ll eat pizza cake if they want to. From birthdays to impending nuptials, stars celebrated the good things in life this weekend. Here’s the news you might have missed:

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Hayden Panettiere Builds a New Home for Tony the Gorilla at the Kiev Zoo

Hayden Panettiere is expecting her first child with her fiancé, Ukrainian boxer Wladimir Klitschko, and she’s already showing what a nurturer she is.