'Mad Men' Actress Linda Cardellini Tweets Photo of Engagement Ring

Pascal Le Segretain/Getty Images
Linda Cardellini

She and longtime boyfriend Steven Rodriguez, who are parents to a 15-month-old daughter, became engaged last week.

A day after becoming engaged, Mad Men actress Linda Cardellini took to Twitter to show off the ring that her longtime boyfriend Steven Rodriguez gave her.

The duo, who are parents to a 15-month-old girl named Lilah Rose, became engaged on Thursday. A day later, Cardellini relayed the story of how he proposed during an appearance on ABC's The View.

PHOTOS: Til Death Do Us Part: Hollywood's Magazine Cover Weddings

She told viewers that they were with some of her family members, including her sister and some cousins, along with her friend Maura Tierney, when he surprised her with the proposal.

"We were sitting, and he started getting choked up and then got on his knee. It was very beautiful," she said.

She later tweeted a close-up photo of their daughter wearing the ring.

Cardellini joined Mad Men in its current (and sixth) season, playing Sylvia Rosen, who was introduced in the season premiere as Don Draper's (Jon Hamm) new mistress. Her other credits include ER and Freaks and Geeks.