Crystal and Danica McKellar
Del Rio Studios
03/25/2009 AT 04:30 PM EDT
Danica McKellar's sister starred on The Wonder Years
with her sibling, but Crystal McKellar's latest role – as her sis's maid of honor – made her feel like a true star.
"I am so thrilled that my sister Danica has met and married the love of her life, composer Mike Verta," Crystal, 32, tells PEOPLE. "I spoke to Danica today – they are on their honeymoon and having the time of their lives."
Danica, 34, and Verta, 36, got married
in a sunset ceremony over the weekend in La Jolla, Calif.
"Everything about the day was magical," adds Crystal, who played Becky Slater on The Wonder Years
while Danica played Winnie Cooper. "From celebrating with our family – the extended McKellar and Verta families, as well as our Wonder Years
family, Dan Lauria and Alley Mills – to watching Danica and Mike dance their first dance as husband and wife."
Verta wrote "Forever in Love With You," a Sinatra-style waltz, specifically for the wedding. Danica and Crystal's uncle, Kim McKellar, sang the song for the occasion.
And the celebration kept on going even after the reception, Crystal tells PEOPLE. "We retired to a favorite family restaurant on the beach in La Jolla called The Marine Room, where Mike lovingly played the song on the piano for Danica while she sat next to him, beaming," she says. "I couldn't be happier for them!"