Suri Cruise and Katie Holmes
04/04/2011 AT 02:20 PM EDT
Mother knows best when it comes to planning the perfect celebration for Suri Cruise's birthday.
"This is my favorite day of the year, so we're going to have a little tea party," Katie Holmes
told Ryan Seacrest
on his KIIS-FM morning radio show
Suri, who turns 5 on April 18, will have her wishes granted on her special day.
"She wants a piñata, and wants her girlfriends to come over [for] some swimming," Holmes, 32, said. "And we're going to make a cake together."
No word on whether or not Suri's father, Tom Cruise
, will take part in the planning process, but it sounds unlikely, considering Holmes says she plans to "girl it up" for the bash.