02/23/2010 AT 12:00 AM EST
In a first look at Carrie Underwood
's guest-starring role on How I Met Your Mother
, the country star puckers up and smooches a teacup pig!
Underwood, who donned a flight attendant's uniform as part of her time on set playing Tiffany, an enigmatic pharmaceutical sales rep and love interest for Ted (played by Josh Radnor), wrote on her Web site that the pig popped on her
"I’m just glad I grew up on a farm," Underwood said, "because I think I was the only one who knew how to hold and wasn’t afraid of a little piglet!”
In the episode, which is set to air in March, Radnor asks her, "Were you always this pretty?"
Underwood's answer: "I was shy and awkward in high school. I was like 100 lbs. heavier and had these crazy buck teeth."
"Seriously?" he asks.
"No, I've always been hot," she says. "What are you going to do?"
When Radnor leans in for a kiss, Underwood stops him by saying, "Do you know who else would love this teacup pig ... my boyfriend."How I Met Your Mother
airs Mondays (8 p.m. EST) on CBS.
For more clips of Carrie, check out the Idol Tracker blog
by the Los Angeles Times
. Tell us: Will you tune in to watch Carrie Underwood on How I Met Your Mother?