By Paul Chavez

PUBLISHED: 17:59 EST, 7 April 2013 | UPDATED: 05:13 EST, 8 April 2013

It was revealed last week that Glee star Heather Morris was expecting her first child.

And now just days later, the actress has revealed her growing baby bump.

The 26-year-old blonde displayed her expanding waistline in a tight yellow tank top on Saturday as she took her pet dog for a walk.

The star was dressed comfortably for the occasion, pairing her fitted top with baggy red sweatpants and some trainers.

Make-up free, she tied her flaxen tresses back into a ponytail.

Heather spent about 20 minutes walking with her pit bull and jogged the last part of the way home with her pet following behind her.

The dancer-turned-actress plays quirky high school cheerleader Brittany on the Fox musical comedy.

In real life, she's in a relationship with her high school sweetheart, Taylor Hubbell, who's the father of the baby.

The baby news apparently caught the couple by surprise and friends say they are happy and excited.

Heather also stars in the crime thriller Spring Breakers, which is currently in theaters, and also features James Franco, Vanessa Hudgens and Selena Gomez.

The actress has been forthcoming in the past about her desire for marriage and a family.

She told Fitness magazine in 2011 that she wanted to marry Hubbell and start a family and wouldn't let her Hollywood career get in the way.

'I love acting, but if it affects my relationship, then I won't continue,' she said.

Heather appeared on Late Night With David Letterman last year and told the comedian that she and Taylor were moving in together.

The former Beyonce back-up dancer got her start in dance before becoming a star by playing the ditzy Brittany on Glee.

She and her boyfriend met in high school and he graduated from the University of Louisiana in Lafayette.